Add license to Scene.h.
No setMatrices calls in samples.

Pause and keep previous scene for eventual sliding off screen.
Slide between samples.
Slide in directionally.

Don't slide in if you are just restarting.
All samples have something visible for animation.
Push loop text fully below screen.
New samples added to iOS project.

Scale positions based on window size.
Merge pull request #6 from sansumbrella/samples

Update Samples