Add vagrantfile and some basic config

I've created a vagrantfile and a bootstrap script that installs php+mysql+apache and sets up HMS.

To use:
$ git clone git@github.com:NottingHack/hms.git
$ cd hms
$ vagrant up
(then wait for it to finish....)

HMS should then be running at http://localhost:8080

It doesn't set up kerberos yet, so any password works. I'll do that next.