Merge pull request #35 from Kolo13/master

Refactoring of obstacles
added "swipe to jump" text and fixed sound problem
Merge pull request #36 from samwong000/master

added "swipe to jump" text and fixed sound problem
Local high score using NSUserDefaults
Added new images to project
Refactored new image names
Merge pull request #37 from vlee90/vincentBranch

Added New Images
Game Center integration
Refactored image size. Added images to Images.xcassets file.
Changed imageNamed in code
Game Center working
Game Center working
Merge pull request #38 from kpham13/GameCenter

Game center
Changed the bundle display name to "Skater Brad"
Resized background. Fixed fall animation bug
deleted unused image
Merge branch 'master' into newBranch
Fixed merge error
Added replay and start button
Merge pull request #39 from vlee90/newBranch

Added New Images.