updated underscore include URL

Chad Armstrong · Chad Armstrong · commit 010090f0a2f2 · 2016-03-25T09:20:20.000-05:00
diff --git a/index.html b/index.html
@@ -9,7 +9,7 @@
   <link href='jquery.mentionsInput.css' rel='stylesheet' type='text/css'>
 
   <script src='https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js' type='text/javascript'></script>
-  <script src='http://documentcloud.github.com/underscore/underscore-min.js' type='text/javascript'></script>
+  <script src='//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js' type='text/javascript'></script>
 </head>
 <body>
 
