Speed update

Before:
[ferret@anthonys-pro ~/dotfiles (master)]$ time sh brew-sync.sh
real    0m24.278s
user    0m13.640s
sys     0m6.491s

After:
[ferret@anthonys-pro ~/dotfiles (master *)]$ time sh brew-sync.sh
real    0m11.552s
user    0m5.327s
sys     0m1.790s
Merge branch 'master' of https://github.com/runningferret/dotfiles