Update book.json

.travis/book.json

@@ -8,6 +8,7 @@
     }
   },
   "plugins": [
+    "-livereload",
     "image-captions",
     "github-buttons",
     "page-treeview"
@@ -20,17 +21,17 @@
       "caption": "图 _PAGE_LEVEL_._PAGE_IMAGE_NUMBER_ - _CAPTION_"
     },
     "github-buttons": {
-      "repo": "yeasy/docker_practice",
-      "types": [
-        "star",
-        "watch"
-      ],
-      "size": "small"
+      "buttons": [{
+        "user": "yeasy",
+        "repo": "docker_practice",
+        "type": "star",
+        "size": "small"
+      }]
     },
     "page-treeview": {
       "copyright": "Copyright © yeasy",
       "minHeaderCount": "2",
       "minHeaderDeep": "2"
-		}
+    }
   }
 }