Aria Templates implementation of the TodoMVC app.

ExtJS with DeftJS version of TodoMVC.

Dart sample syntax & README up to date

Also, added one missing - but optional - dependency requirement for Backbone in
the main.js to allow for r.js compilation.

Continuously update the ChangeLog

Updates Ember.js example to 1.0.rc1

Style update for Backbone and Ember

fixed url to base.css in flight example

Move Flight out of labs

Close #458
+ ENTER_KEY extracted