Create DigitalOcean install button

Fixes virtkick/virtkick#61

Creates a VM with 'admin' user and installs virtkick into it.

Tested on a 4gb DO vps and was able to create and boot into Arch Linux vm. The DO installer website hung for me and I'm not sure if it's because of how long it took to download the isos or if it's a bug on their side.

Screenshot of button below

![screen shot 2014-11-05 at 6 31 26 pm](https://cloud.githubusercontent.com/assets/111271/4930029/0e2ed2ac-655d-11e4-8483-c3727cf9ab5d.png)