New Twiddle

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  
  actions: {
    testAction: function() {
      alert('test');
    }
  }
  
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>

<button {{action 'testAction'}}>Click</button>

{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.4.13",
  "dependencies": {
    "jquery": "http://code.jquery.com/jquery-2.1.4.min.js",
    "ember": "http://builds.emberjs.com/release/ember.debug.js",
    "ember-data": "http://builds.emberjs.com/release/ember-data.js",
    "ember-template-compiler": "http://builds.emberjs.com/release/ember-template-compiler.js"
  }
}