fedora-review ruby plugin

[Josef Stribny]

>
> I need some help with reviewing and testing. Until this is done, I 
> doubt I can merge this.
>

I am on it. If I understand it right I should run ruby21 branch when 
using Fedora 21 workstation, right?
Anyways, it complained about not having licensecheck (from 
devscripts-minimal package if anyone else come across it). I will look 
on what's in the report now.

Josef