Vagrant configuration to instantiate development boxes easily

Vagrant allows to create virtual machines for software development. Added a configuration to create a friendica server using 'vagrant up'. See documentation of vagrant here: http://www.vagrantup.com/

The development server is accessible via browser through http://192.168.22.10.xip.io/ and via ssh through 'vagrant ssh'. A database named 'friendica' is already created (Username/Password: root).

This configuration worked on my Ubuntu 14.04. machines but might need some tweaking as not all features are working yet. The Vagrantfile is based on Vaprobash (https://github.com/fideloper/Vaprobash). 

I will add documentation for the wiki in the next few days.