TapityTapperTutorial

==================== Tapity Tapper is a Flappy Bird Clone for iOS using Sprite Kit.

Index:

1. Getting Started: Here we begin by making the Xcode project and adding a red rectangle that will be our bird, and start to play with the physics engine.
2. Applying Impulse: We know use the physics engine to make the red rectangle jump
3. Adding Obstacles: This game would be so boring without obstacles, so here we add them and make them go from one side of the screen to the other.
4. Collision Detection: The game is over when an obstacle touches our red rectangle, here we add the necessary stuff to detect collisions.
5. Game Over: Here we add a way to start the game loop after each game over.
6. The Last One: Wrapping up.