diff --git a/.idea/emacs.xml b/.idea/emacs.xml
deleted file mode 100644
index a1e816f..0000000
--- a/.idea/emacs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="EmacsSettings">
-    <option name="emacsPath" value="/usr/bin/emacs" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/jwt.iml b/.idea/jwt.iml
deleted file mode 100644
index 5e764c4..0000000
--- a/.idea/jwt.iml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="WEB_MODULE" version="4">
-  <component name="Go" enabled="true" />
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$" />
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index 0f9aaf6..0000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/jwt.iml" filepath="$PROJECT_DIR$/.idea/jwt.iml" />
-    </modules>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/watcherTasks.xml b/.idea/watcherTasks.xml
deleted file mode 100644
index df66477..0000000
--- a/.idea/watcherTasks.xml
+++ /dev/null
@@ -1,53 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectTasksOptions">
-    <TaskOptions isEnabled="true">
-      <option name="arguments" value="fmt $FilePath$" />
-      <option name="checkSyntaxErrors" value="true" />
-      <option name="description" />
-      <option name="exitCodeBehavior" value="ERROR" />
-      <option name="fileExtension" value="go" />
-      <option name="immediateSync" value="false" />
-      <option name="name" value="go fmt" />
-      <option name="output" value="$FilePath$" />
-      <option name="outputFilters">
-        <array />
-      </option>
-      <option name="outputFromStdout" value="false" />
-      <option name="program" value="$GoExecPath$" />
-      <option name="runOnExternalChanges" value="false" />
-      <option name="scopeName" value="Project Files" />
-      <option name="trackOnlyRoot" value="true" />
-      <option name="workingDir" value="" />
-      <envs>
-        <env name="GOROOT" value="$GOROOT$" />
-        <env name="GOPATH" value="$GOPATH$" />
-        <env name="PATH" value="$GoBinDirs$" />
-      </envs>
-    </TaskOptions>
-    <TaskOptions isEnabled="true">
-      <option name="arguments" value="-w $FilePath$" />
-      <option name="checkSyntaxErrors" value="true" />
-      <option name="description" />
-      <option name="exitCodeBehavior" value="ERROR" />
-      <option name="fileExtension" value="go" />
-      <option name="immediateSync" value="false" />
-      <option name="name" value="goimports" />
-      <option name="output" value="$FilePath$" />
-      <option name="outputFilters">
-        <array />
-      </option>
-      <option name="outputFromStdout" value="false" />
-      <option name="program" value="goimports" />
-      <option name="runOnExternalChanges" value="false" />
-      <option name="scopeName" value="Project Files" />
-      <option name="trackOnlyRoot" value="true" />
-      <option name="workingDir" value="" />
-      <envs>
-        <env name="GOROOT" value="$GOROOT$" />
-        <env name="GOPATH" value="$GOPATH$" />
-        <env name="PATH" value="$GoBinDirs$" />
-      </envs>
-    </TaskOptions>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
deleted file mode 100644
index b249e87..0000000
--- a/.idea/workspace.xml
+++ /dev/null
@@ -1,302 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ChangeListManager">
-    <list default="true" id="847c5949-378a-4c01-9318-d1db88c22ef9" name="Default" comment="" />
-    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
-    <option name="TRACKING_ENABLED" value="true" />
-    <option name="SHOW_DIALOG" value="false" />
-    <option name="HIGHLIGHT_CONFLICTS" value="true" />
-    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
-    <option name="LAST_RESOLUTION" value="IGNORE" />
-  </component>
-  <component name="FileEditorManager">
-    <leaf>
-      <file leaf-file-name="showtoken.go" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/token/showtoken.go">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="527">
-              <caret line="39" column="24" lean-forward="true" selection-start-line="39" selection-start-column="24" selection-end-line="39" selection-end-column="24" />
-              <folding />
-            </state>
-          </provider>
-        </entry>
-      </file>
-      <file leaf-file-name="token.go" pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/token/token.go">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="251">
-              <caret line="38" column="5" lean-forward="false" selection-start-line="38" selection-start-column="5" selection-end-line="38" selection-end-column="5" />
-              <folding />
-            </state>
-          </provider>
-        </entry>
-      </file>
-    </leaf>
-  </component>
-  <component name="GOROOT" path="/usr/local/opt/go/libexec" />
-  <component name="IdeDocumentHistory">
-    <option name="CHANGED_PATHS">
-      <list>
-        <option value="$PROJECT_DIR$/cmd/verify.go" />
-        <option value="$PROJECT_DIR$/cmd/show.go" />
-        <option value="$PROJECT_DIR$/token/signtoken.go" />
-        <option value="$PROJECT_DIR$/cmd/sign.go" />
-        <option value="$PROJECT_DIR$/token/token.go" />
-      </list>
-    </option>
-  </component>
-  <component name="JsBuildToolGruntFileManager" detection-done="true" sorting="DEFINITION_ORDER" />
-  <component name="JsBuildToolPackageJson" detection-done="true" sorting="DEFINITION_ORDER" />
-  <component name="JsGulpfileManager">
-    <detection-done>true</detection-done>
-    <sorting>DEFINITION_ORDER</sorting>
-  </component>
-  <component name="ProjectFrameBounds" extendedState="6">
-    <option name="x" value="1920" />
-    <option name="y" value="23" />
-    <option name="width" value="1440" />
-    <option name="height" value="877" />
-  </component>
-  <component name="ProjectView">
-    <navigator currentView="ProjectPane" proportions="" version="1">
-      <flattenPackages />
-      <showMembers />
-      <showModules />
-      <showLibraryContents />
-      <hideEmptyPackages />
-      <abbreviatePackageNames />
-      <autoscrollToSource />
-      <autoscrollFromSource />
-      <sortByType />
-      <manualOrder />
-      <foldersAlwaysOnTop value="true" />
-    </navigator>
-    <panes>
-      <pane id="Scratches" />
-      <pane id="ProjectPane">
-        <subPane>
-          <expand>
-            <path>
-              <item name="jwt" type="b2602c69:ProjectViewProjectNode" />
-              <item name="jwt" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="jwt" type="b2602c69:ProjectViewProjectNode" />
-              <item name="jwt" type="462c0819:PsiDirectoryNode" />
-              <item name="cmd" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="jwt" type="b2602c69:ProjectViewProjectNode" />
-              <item name="jwt" type="462c0819:PsiDirectoryNode" />
-              <item name="token" type="462c0819:PsiDirectoryNode" />
-            </path>
-          </expand>
-          <select />
-        </subPane>
-      </pane>
-      <pane id="Scope" />
-    </panes>
-  </component>
-  <component name="PropertiesComponent">
-    <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
-    <property name="last_opened_file_path" value="$PROJECT_DIR$" />
-    <property name="go.sdk.automatically.set" value="true" />
-    <property name="settings.editor.selected.configurable" value="watcher.settings" />
-  </component>
-  <component name="RunDashboard">
-    <option name="ruleStates">
-      <list>
-        <RuleState>
-          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
-        </RuleState>
-        <RuleState>
-          <option name="name" value="StatusDashboardGroupingRule" />
-        </RuleState>
-      </list>
-    </option>
-  </component>
-  <component name="RunManager">
-    <configuration name="go build main.go" type="GoApplicationRunConfiguration" factoryName="Go Application" temporary="true">
-      <module name="jwt" />
-      <working_directory value="$PROJECT_DIR$/" />
-      <go_parameters value="-i" />
-      <parameters value="show -t -" />
-      <kind value="FILE" />
-      <filePath value="$PROJECT_DIR$/main.go" />
-      <package value="github.com/ehlxr/jwt" />
-      <directory value="$PROJECT_DIR$/" />
-    </configuration>
-    <recent_temporary>
-      <list size="1">
-        <item index="0" class="java.lang.String" itemvalue="Go Build.go build main.go" />
-      </list>
-    </recent_temporary>
-  </component>
-  <component name="ShelveChangesManager" show_recycled="false">
-    <option name="remove_strategy" value="false" />
-  </component>
-  <component name="ToolWindowManager">
-    <frame x="1920" y="23" width="1440" height="877" extended-state="6" />
-    <editor active="true" />
-    <layout>
-      <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
-      <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="true" content_ui="tabs" />
-      <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="false" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32992327" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.17381974" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
-      <window_info id="Hierarchy" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.24964234" sideWeight="0.5" order="2" side_tool="false" content_ui="combo" />
-      <window_info id="Docker" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="false" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Database" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32992327" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-      <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="true" content_ui="tabs" />
-      <window_info id="Debug" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.39897698" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Cvs" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
-      <window_info id="Message" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
-      <window_info id="Commander" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
-      <window_info id="Inspection" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
-      <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-    </layout>
-  </component>
-  <component name="TypeScriptGeneratedFilesManager">
-    <option name="version" value="1" />
-  </component>
-  <component name="VcsContentAnnotationSettings">
-    <option name="myLimit" value="2678400000" />
-  </component>
-  <component name="XDebuggerManager">
-    <breakpoint-manager>
-      <breakpoints>
-        <line-breakpoint enabled="true" type="DlvLineBreakpoint">
-          <url>file://$PROJECT_DIR$/token/token.go</url>
-          <line>45</line>
-          <properties />
-          <option name="timeStamp" value="4" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" type="DlvLineBreakpoint">
-          <url>file://$PROJECT_DIR$/token/token.go</url>
-          <line>39</line>
-          <properties />
-          <option name="timeStamp" value="7" />
-        </line-breakpoint>
-      </breakpoints>
-      <option name="time" value="8" />
-    </breakpoint-manager>
-    <watches-manager />
-  </component>
-  <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/main.go">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="247">
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-    <entry file="file://$PROJECT_DIR$/cmd/root.go">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="317">
-          <caret line="47" column="18" lean-forward="true" selection-start-line="46" selection-start-column="8" selection-end-line="47" selection-end-column="18" />
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-    <entry file="file://$PROJECT_DIR$/cmd/show.go">
-      <provider selected="true" editor-type-id="text-editor">
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-    <entry file="file://$PROJECT_DIR$/util/tokenutil.go">
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-    <entry file="file://$PROJECT_DIR$/../../spf13/pflag/string.go">
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-        <state relative-caret-position="171">
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-    <entry file="file://$PROJECT_DIR$/../../spf13/pflag/duration.go">
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-    <entry file="file://$PROJECT_DIR$/../../spf13/pflag/flag.go">
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-        <state relative-caret-position="142">
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-    <entry file="file://$PROJECT_DIR$/../../spf13/pflag/flag_test.go">
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-    <entry file="file://$PROJECT_DIR$/token/signtoken.go">
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-    <entry file="file://$PROJECT_DIR$/cmd/verify.go">
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-    <entry file="file://$PROJECT_DIR$/cmd/sign.go">
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-    <entry file="file://$PROJECT_DIR$/token/token.go">
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-          <caret line="38" column="5" lean-forward="false" selection-start-line="38" selection-start-column="5" selection-end-line="38" selection-end-column="5" />
-          <folding />
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-    </entry>
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-</project>
\ No newline at end of file