Faster ball speed
from 6:3 to 12:6
Deleted WebPong
Added ball speed variable  and implemented throughout to more easily
control ball speed
Made Computer Player
Now winndable. Computer moves after ball is in left half.
Winnable
Fixed winning screen
Added Varying ball speeds and angles to make more interesting
Wrapped code saying ball slope in a wrapper at bottom
Added computer Difficulty: Easy or Hard
Added Start ballX position as 400 so to give more time to react. Methoed
randDeltaX returns a negative deltaX so the ball moves left.
Made ball start from farther left or farther right to allow for more
time to adjjust to ball launch
Merge remote-tracking branch 'origin/Pong'