Add Firefox bin to /usr/local/heroku/bin:/opt/homebrew-cask/Caskroom/postgres/latest/Postgres.app/Contents/MacOS/bin:/Users/jgillman/bin:./bin:/Users/jgillman/.rbenv/shims:/usr/local/bin:/usr/local/sbin:/usr/local/share/npm/bin:/Users/jgillman/.sfs:/Users/jgillman/.dotfiles/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/jgillman/.rbenv/versions/2.0.0-rc2/bin:/usr/local/Cellar/rbenv/0.4.0/libexec:/usr/local/heroku/bin:/opt/homebrew-cask/Caskroom/postgres/latest/Postgres.app/Contents/MacOS/bin:/Users/jgillman/bin:./bin:/Users/jgillman/.rbenv/shims:/usr/local/sbin:/usr/local/share/npm/bin:/Users/jgillman/.sfs:/Users/jgillman/.dotfiles/bin