New Twiddle

controllers.application.js

import Ember from 'ember';

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

styles.app.css

/* external css: flickity.css */

* { box-sizing: border-box; }

body { font-family: sans-serif; }

.carousel {
  background: #EEE;
}

.carousel img {
  display: block;
  height: 200px;
}

@media screen and ( min-width: 768px ) {
  .carousel img {
    height: 400px;
  }
}

templates.application.hbs

{{#em-flickity class="carousel" showSlides=true}}
  
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/orange-tree.jpg" alt="orange tree" />
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/submerged.jpg" alt="submerged" />
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/look-out.jpg" alt="look-out" />
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/one-world-trade.jpg" alt="One World Trade"/>
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/drizzle.jpg" alt="drizzle" />
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/cat-nose.jpg" alt="cat nose" />
{{/em-flickity}}

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "flikcityCSS":"https://npmcdn.com/flickity@2/dist/flickity.css",
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-flickity": "0.1.5"
  }
}