Copy over changes made to gh-pages directly

This includes the following commits from the gh-pages branch:

 - 63e80b8
 - d24a397
 - 9796cd6
 - ee21707
 - ccb0f1d
 - 200e6b3
 - 64134c0
 - 57152d2
 - 8ffbfa3

docs/templates/index.liquid

@@ -27,7 +27,7 @@
 
             <div class="btn-group" style="float:right">
               <a class="btn btn-primary" href="http://jqplay.org">
-                Try online!
+                Try online at jqplay.org!
               </a>
             </div>