Docker's vagrant file - to help (mac) users get bootstrapped.

This is a copy of the Vagrant file from the docker repo
https://github.com/dotcloud/docker/blob/master/Vagrantfile

This is here to help bootstrap folks that don't have LINUX (mac users
for example).  This assumes that you have already installed Vagrant
and VirtualBox

See: Running Vagrant on VirtualBox
http://docs-v1.vagrantup.com/v1/docs/getting-started/