caskroom/homebrew-versions — pull request #195 by Number-42 (2014-03-31 16:22:15+00:00)
Title: moved firefox-esr-us.rb to Casks

This fixes an issue where Homebrew trears ```firefox-esr-us.rb``` as a normal formula, causing an issue with ```brew doctor```. Moving the cask to "Casks" fixes the issue.