inject live reload client on DOM ready

Author: imlucas

src/app.js

@@ -77,6 +77,12 @@ var Application = State.extend({
    * We have what we need, we can now start our router and show the appropriate page!
    */
   _onDOMReady: function() {
+    var head = document.getElementsByTagName('head')[0];
+    var script = document.createElement('script');
+    script.type = 'text/javascript';
+    script.src = 'http://localhost:35729/livereload.js';
+    head.appendChild(script);
+
     new Layout({
       el: document.querySelector('#application'),
       app: this