Initial setup of Vagrant Base
This step only ever needs to be done once. Once the precise64 box is installed on a system the remaining steps refer to that same box regardless of the project.
Download and install Xcode from the Apple App Store.
Download VirtualBox from http://www.virtualbox.org/wiki/Downloads, install dmg.
Download Vagrant 2 or higher from http://downloads.vagrantup.com/, install dmg.