Merge pull request #120 from coderdojo-japan/force-load-css-2

cssのキャッシュを捨てるためハッシュ値を変更

Author: Fukusan64

_includes/head.html

@@ -64,5 +64,5 @@
 
   <!-- CSS -------------------------- -->
   <!-- DojoCon CSS -->
-  <link rel="stylesheet" href="/css/main.css?f4651439" />
+  <link rel="stylesheet" href="/css/main.css?3ba454d" />
 </head>