all screens now implement com.badlogic.gdx.Screen interface, some code refactoring
score is working with libgdx 0.9.9
score as text
main menu using stage and scene2d ui (check :D)
main menu buttons have 2 states
android project uptodate
adding images to android project
fix build path
initial Ad
Control Ad: hide in GameLoop, Show o.w.
increase ball sensitivity to motion