New Twiddle

controllers.application.js

import Ember from 'ember';

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

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  imgCache: Ember.inject.service(),
  beforeModel() {
    this.get('imgCache').cacheFile('someFile');
    console.log('imgCache cached someFile in beforeModel');
  }
});

services.img-cache.js

import Ember from 'ember';
import ImgCache from 'twiddle/utils/imgcache';

export default Ember.Service.extend({
  init() {
    ImgCache.init();
  },
  cacheFile(fileName) {
    ImgCache.cacheFile(fileName);
  }
});

templates.application.hbs

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

twiddle.json

{
  "version": "0.10.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.6.0",
    "ember-data": "2.6.1",
    "ember-template-compiler": "2.6.0",
    "imgcache": "https://rawgit.com/chrisben/imgcache.js/master/js/imgcache.js"
  },
  "addons": {}
}

utils.imgcache.js

export default window.ImgCache;