add /usr/local/sbin to $PATH
.gitconfig: make commits as jaybuff@apple.com

primarily i am making commits for apple, so use my apple
email address
add horizon et al to vagrant config
use stackinthebox rather than ~/.vagrant.d files

I've stopped using ~/.vagrant.d in favor of our private
stackinthebox project.  This updates my .bashrc to use
stackinthebox.

stackinthebox relies on vagrant 1.2 with the vmware fusion plugin