Initial commit of the fork gempac.

I have chosen to do my first commit on the fork now.
Working several weeks on this complete rewrite of
pacgem syncing with my laptop became the hell...

- As mentioned this is the first commit of gempac. Hooray!
- I rewrote pacgem completly, so I think switching to MIT
  License should not cause any problems.
- Two basic commands work: installing packages (gempac -S gem)
  and retrieving information (gempac -Q gem).
- I used r18n so we are able to provide translations.
- Dependencies (I will write the docs later):
  - ruby 2.0
  - curl
  - pacman
  - gem: gems, r18n

Well, there is a lot of work left. But I think this is a good
starting point to use git.

PS.: I will start using my sevenbyte.org email adress from now on.

Signed-off-by: Stefan Tatschner <stefan@sevenbyte.org>