input-file

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}}
{{input type='file'}}
{{#x-select}}
  {{#xs.option}}Test{{/xs.option}}
{{/x-select}}
Test2
<br>
<br>

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",
    "sass.js": "https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.3/sass.sync.min.js"
  },
  "addons": {
  	"active-model-adapter": "2.1.1",
    "ember-ajax": "2.5.4",
    "ember-cli-datepicker": "2.0.1",
    "ember-hammertime": "1.1.2",
    "ember-simple-auth": "1.2.0-beta.2",
    "ember-truth-helpers": "1.3.0",
  	 "emberx-select": "3.0.0"
  }
}