New Twiddle

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  actions: {
    handler() {
      window.alert('You clicked me!');
    }
  }
});

application.template.hbs

{{component-a handler=(action 'handler')}}

component-a.component.js

import Ember from 'ember';

export default Ember.Component.extend({
});

component-a.template.hbs

{{component-b handler=handler}}

component-b.component.js

import Ember from 'ember';

export default Ember.Component.extend({
});

component-b.template.hbs

<a href="#" {{action handler}}>Click me</a>

twiddle.json

{
  "version": "0.4.11",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.11/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember-template-compiler.js"
  }
}