title: Ember CLI app inside a Rails engine
body: <p>I'm making a Rails engine that has an <code>/admin</code> route. I'd like to create this admin interface with Ember CLI. </p>
  
  <p>I know rails will automatically precompile any static JS/CSS that live in my engine's <code>lib</code> dir, and only load them when the parent application mounts my engine and visits that route. However, I'd like to use Ember CLI to build the admin interface.</p>
  
  <p>What would be a good way to do this? Ideally I'd like to keep Ember CLI builds out of the repo.</p>