Adding ball and paddle files
Moved appropriate methods and properties to the correct object
Renamed paddlePosition to just position
Changed paddleHeight and paddleWidth to height and width respectively
Moved PADDLE_COLLISION_PADDING to game from paddle.js since the paddle
shouldn't know about the padding added to make the collision detection feel
more natural
Removed paddlex and PADDLE_POSITION_OFFSET variables
Renaming ballSpeed to velocity
Renamed ballRadius to radius
Renamed ballColour to colour and tempBallPosition to tempPosition
Removed the word ball from ball.js methods
Moving logic to bounce off of something to ball.js
Cleaning up code by adding a method that's call when the ball hits the paddle
Cleaning up ball draw() method
Removed tempPosition from ball.js
Removing whitespace
Merge branch 'dev'