Merge pull request #12 from pavedwalden/master

Integrated health bar
Merge pull request #13 from pavedwalden/master

Add basic depth limiting
Add ocean background grid and scrolling
merged alex's code with Brad's
Overlay Experiments
Merge remote-tracking branch 'upstream/master'
Xcode crashed during previous merge
Can't continue working until I've figured out why the background is now in the foreground. Committing current working state so I can pull latest upstream master.
Badly broken. Committing current state so I can try merging it into a known-good branch to find the problems
updated ocean background, waves, and clouds
Merge pull request #14 from michaeltirenin/master

updated ocean background, waves, and clouds
Added small bubble generation, but not using the class named after it for it :)
merged Michael's code and Brad's code
got background images scrolling on 2x, added small bubbles to simulate speed.
Overlay layer in place, but not displaying all text
Merge remote-tracking branch 'upstream/master'