Basic implementation for fade on collision. Functionally, it's appropriate, clunky code-wise. Need to create a class, or at the very least, a helper function.
The idea is that the rocket should be removed almost immediately on impact, but the android should fade away. Have to try numbers less than 0.1.
Moved framework code imports to PCH
Added category for SKNode for fade out animation.
Update README.md
Merge branch 'feature/fadeOnCollision'