breakout.scm is an example of using c-wrapper and SDL.

- How to play
  (1) Install SDL and SDL_mixer.
  (2) Create sdlib.so.
      % make
  (3) Run breakout.scm.
      % make run
  
- Key binding
  'z':   The paddle moves left.
  'x':   The paddle moves right.
  space: Shoot a ball.

Note:
  cursor5.wav and cursor6.wav are downloaded from http://www.tam-music.com/.

