New Twiddle

components.radio-button.js

import Ember from 'ember';

export default Ember.Component.extend({
  value: '',
  actions: {
    select(value) {
      this.set('value', value);
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  list: ['Option 1', 'Option 2', 'Option 3', 'Option 4']
});

helpers.eq.js

import Ember from 'ember';

export function eq([arg1, arg2]) {
  return arg1 === arg2;
}

export default Ember.Helper.helper(eq);

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{radio-button options=list}}
<br>
<br>

templates.components.radio-button.hbs

<b>Selected Option is {{value}}</b>

<ul>
{{#each options as |option|}}
	<li>
  	<button {{action 'select' option}}>Option</button>
    {{#if (eq option value)}}
     <b>Selected!</b>
    {{/if}}
  </li>
{{/each}}
</ul>

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}