Add GNU 30 year animation code.

  This contains a *very* basic GIF reader and display-er. This code can
  be cleaned up a bit. Some known bugs:

    - Gifs bigger than the size of the building will only be sampled
      from 0,0 -> height,width of the building.

    - Gif frame-delays are ignored for a static speed. This is perhaps
      not great.

    - The code to set / manage gifs is a bit sloppy. It should work
      fine, but it may need a tweak if we're going to show the code off.
Adding crash-and-burn
only GNU 30 animations
Merge branch 'gnu30' of github.com:nicocesar/d54 into gnu30
Updated year on license
Removed unused imports from PongPlugin
Adding twitter interface to public repo
Adding pixel font support
Adding mario game to public repo
Version 0.2.0, adding symlink for current version d54.jar