diff --git a/cover.jpg b/_images/cover.jpg
similarity index 100%
rename from cover.jpg
rename to _images/cover.jpg
diff --git a/cover.sketch b/_images/cover.sketch
similarity index 100%
rename from cover.sketch
rename to _images/cover.sketch
diff --git a/cover_small.jpg b/_images/cover_small.jpg
similarity index 100%
rename from cover_small.jpg
rename to _images/cover_small.jpg