puma/puma — pull request #540 by allaire (2014-05-27 03:28:04+00:00)
Title: Typo BUNDLER_GEMFILE -> BUNDLE_GEMFILE

I was wondering why puma was logging that I wasn't using puma via bundle exec when it was the case. Turns out `ENV['BUNDLER_GEMFILE']` does not exists, ENV['BUNDLE_GEMFILE'] does:

`ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)`