New version (1.4)

Hi everyone, here's the new version of Reverse Gnop (1.4). 

-Updates : -Your pad gets now bigger each time one of the 2 ball bounce on it (only when there's 2 ball on the board).

                        -I made the background a little more dark so you can clearly see the difference between the background and the action.

                        -I did some optimisations.