nrw/coffee-script-precompiler — pull request #6 by petebacondarwin (2012-01-25 12:33:11+00:00)
Title: Updated to use kanso-utils 0.1.4

I have updated the dependency to kanso-utils 0.1.4. This might be the reason why you still had to add the Buffer in on the attachments. If you look at the new version of attachments.add it now creates a Buffer if there wasn't one passed in.