Added chipmunk
Removed intersect code for now and added exit button (Esc).
Removed unneeded methods and moved bat higher for testing.
Got ball moving correctly using chipmunk.
Added various ball images.
Added custom Chipmunk extensions.
Load cp_extensions and minor refactor.
Create poly for bat.
Added RMagick gem.
@shape.body -> @body
Use RMagick to create color for poly.
Minor code cleanup.
Implemented pitch! method to move ball.
Fixed bat drawing.
Pitch ball when Space is pressed.
Don't pitch if the ball is already moving.