@rjackson maybe could we allow here an easy way to specify my ember.js path? Besides of what @stefanpenner said of using ENV to decide if we use min or not, I would like to use canary and here the story is a little more complicated (unless it changed).

I'm updating an app to this Brocfile, and I have the following in my bower.
```
    "ember": "http://builds.emberjs.com/canary/ember.js",
    "ember-prod": "http://builds.emberjs.com/canary/ember.prod.js",
```

I'm doing something like 

```
app.legacyFilesToAppend = without(app.legacyFilesToAppend, 'ember/ember.js'); 
if (app.env === 'production') {
  app.import('ember-prod/index.js');
} else {
  app.import('ember/index.js');
}
```
Which doesn't work,  we require Ember to before `ember-load-initializers`