New Twiddle

components.my-component.js

import Ember from 'ember';

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

components.outer-component.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'
});

templates.application.hbs

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

{{outer-component
  componentOnItsOwn=(component 'inner-component')
	componentInAHash=(hash component=(component 'inner-component'))}}
<br>
<br>

templates.components.inner-component.hbs

And it works!

templates.components.outer-component.hbs

This is the outer component
<br/><br/>

This was passed in inside a hash:<br/>
{{componentInAHash.component}}

<br/><br/>
This was passed in without being in a hash:<br/>
{{componentOnItsOwn}}

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {}
}