heroku/heroku-buildpack-ruby — pull request #219 by hone (2014-01-30 23:19:44+00:00)
Title: read user ENV settings for both user-env-compile or buildpack-env-arg

Right now, we just read ENV stuff from the actual environment which only works for user-env-compile, this reads bundler and rails settings from both user-env-compile and buildpack-env-arg.