wlepinski/heroku-buildpack-php-grunt — pull request #1 by ryandjurovich (2014-05-17 05:43:34+00:00)
Title: Changed $bp_dir case

Upon executing build pack I received the following error:
````
/tmp/buildpack_75258a36-910c-40ad-921b-3441c6ee2f91/bin/compile: line 365: bp_dir: unbound variable
````
Changing the case of $bp_dir has resolved this for me.
Thanks for the great build pack!