Remember scroll position when returning to index

ember/app/views/index/index.js

@@ -4,6 +4,11 @@ export default Ember.View.extend({
 
     didInsertElement: function() {
         this.updateTitle();
+        $(window).scrollTop(this.get('controller.scrollTop'));
+    },
+
+    willDestroyElement: function() {
+    	this.set('controller.scrollTop', $(window).scrollTop());
     },
 
     updateTitle: function() {