Initial Vagrantfile

Woho

Initial `vagrant up` (or later `vagrant provision`) may take a while, it's by far not optimized. However, after successful provisioning

```bash
vagrant ssh
cd /vagrant
rails server
```

or whatever you'd like to do over there. After `rails server` you can access the server directly in `localhost:3000` (or in `192.168.42.2:3000`). Yeah, hardcoded IP and port forward, I know.


Btw: It's about [Vagrant](http://www.vagrantup.com/), a pretty cool development-VM builder