New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  sortKey: Ember.computed(() => ['label:asc']),
  things: Ember.computed(() => [{ id: 1, label: 'xylophone' }, { id: 2, label: 'house' }, { id: 3, label: 'Aardvark'}]),
  sortedThings: Ember.computed.sort('things', 'sortKey')
});

templates.application.hbs

<ul>
  {{#each sortedThings as |thing|}}
    <li>{{thing.label}}</li>
  {{/each}}
</ul>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}