Completed Tutorial: Phaser HTML5 Pong Remake

This release includes all the source code for the entire HTML5 + Phaser Pong remake for the 7-step tutorial series:

1. Project Setup
2. Loading Assets & Adding Sprites
3. Moving the Ball
4. Adding the Game Mode
5. Moving the Paddles & Adding Collisions
6. Scoring and Resetting
7. Adding Sounds and Wrapping Up