Homebrew/homebrew — pull request #25837 by apetresc (2014-01-12 13:06:46+00:00)
Title: Adding --HEAD to rbenv-bundler

This is needed because of carsomyr/rbenv-bundler#36 which prevents `rbenv rehash` from working properly when using the latest version of Bundler. The fix was applied but version 0.97 hasn't been released yet, so this is the only way to make it work currently.