refact(index.html): remove self closing slash for link tag.

Fatih Kadir Akın · petebacondarwin · commit 6ca94d46e334 · 2014-10-03T12:31:06.000+01:00
You don't need it when doctype is HTML5 and also the others above already don't have one. Closes #232
diff --git a/app/index.html b/app/index.html
@@ -11,7 +11,7 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="stylesheet" href="bower_components/html5-boilerplate/css/normalize.css">
   <link rel="stylesheet" href="bower_components/html5-boilerplate/css/main.css">
-  <link rel="stylesheet" href="app.css"/>
+  <link rel="stylesheet" href="app.css">
   <script src="bower_components/html5-boilerplate/js/vendor/modernizr-2.6.2.min.js"></script>
 </head>
 <body>
