Add vagrant file

This is a first pass to start using vagrant in the dev workflow on a Mac. 

It simply builds a 14.04 vagrant box and adds the bare essential packages to build cattle.
The Source directory is shared with the VM.

To get started:

     git clone git@github.com:cattleio/cattle.git
     cd cattle
     vagrant up
     vagrant ssh
     cd /src/cattle
     make build

When done building artifacts are available on the host in the dist/server/artifacts directory.