First pass at *nix-compatibility through libnotify.

I've added *nix compatibility through libnotify (via notify-send CLI) and tested it on Ubuntu 13.04, it should however, work on any *nix distro with libnotify installed and set up correctly.  I have included a spec and some comments, I also took the liberty of bumping the version so be aware it will change if you accept this request.
The images that are included are free for both commercial and personal use.