stefanpenner/ember-cli — pull request #1785 by rwjblue (2014-08-27 13:29:57+00:00)
Title: Abstract Addon logic for tree generation.

* Expose `Addon.prototype.isDevelopingAddon` function.
* Expose `Addon.prototype.treeGenerator` function, that automatically handles the returning an `unwatchedTree` vs the bare directory (therefore causing it to be watched).