rlivsey/broccoli-concat — pull request #21 by rwjblue (2014-08-26 15:26:38+00:00)
Title: Ensure that both cache and dest dirs are cleaned up.

broccoli-writer has its own `cleanup` function, to clear the destination directory up. The recent changes (to keep another cache directory) added a `cleanup` function, but that overwrote the one we inherited from `Writer`.

Fixes the build failures that ember-cli is having on the update to `0.0.10`.