[BUGFIX make-ember-less-fun] Fixes #4286

Ember.js has become too much fun to use. See [here](https://twitter.com/stefanpenner/status/430028562264236032), [here](https://twitter.com/horse_js/status/430029568007622657), [here](https://twitter.com/dhabersack/status/426296441641140224), etc.

This PR fixes #4286