New Twiddle

components.my-layout.js

import Ember from 'ember';

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

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

styles.app.css

body {
  display: flex;
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

templates.application.hbs

{{#my-layout as |section|}}
	{{#if section.header}}
  	<h1>My Cool Layout</h1>
  {{else if section.content}}
  	<p>This is a <i>cool</i> layout!</p>
  {{else if section.aside}}
  	<p>so, anyway, some other things...</p>
  {{else}}
  	<small>&copy; 2017</small>
  {{/if}}
{{/my-layout}}

templates.components.my-layout.hbs

<main>
	<header role="banner">
  	{{yield (hash header=true)}}
  </header>

	<div class="content">
  	{{yield (hash content=true)}}
	</div>

	<aside role="complimentary">
  	{{yield (hash aside=true)}}  
  </aside>

  <footer role="contentinfo">
  	{{yield (hash footer=true)}}
  </footer>
</main>

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"
  }
}