Merge pull request #2329 from pstadler/brew-cask

add brew-cask plugin
Remove mailcatcher

The mailcatcher gem does not work correctly when executed through Bundler.
Merge pull request #2685 from delynn/patch-2

Remove mailcatcher from bundler plugin
Add .ipsw to the extract plugin.
"autoload colors; colors;" crashes SSH session with "fatal error: out of memory"
Fix: https://github.com/Neal/dotfiles/blob/master/zsh/colors.zsh
See #1815