Allow user files to be in whatever lange they like

Out of the box, coffee-script will have been registered, but if they 
want to use clojurescript config files or cson, all they have to do is
register it at the top of their Brocfiles. Wee!

resolves #28
fix other references
require path typo
Merge pull request #35 from cabbagejs/coffee-config

Coffee config