firefox: wrapper to force Xvfb under rspec
firefox: wrapper to force Xvfb under rspec

Conflicts:

	bin/firefox

benizi/dotfiles,benizi/dotfiles,nestukh/dotfiles,benizi/dotfiles,nestukh/dotfiles,nestukh/dotfiles,benizi/dotfiles,nestukh/dotfiles,nestukh/dotfiles,nestukh/dotfiles,benizi/dotfiles,benizi/dotfiles,nestukh/dotfiles,benizi/dotfiles,nestukh/dotfiles,benizi/dotfiles