Update sample project for Xcode 5, iOS7
Use object_setClass() instead of isa swizzling

isa swizzling deprecated, whereas object_setClass() is public API
API method rename

showTouchesWithColor:onlyWhenMirrored: renamed to
showTouchesWithColor:whenMirrored:
Modernize sample app implementation code
Update documentation
Bump copyright dates
Bump version to 1.2.0
Add initial podspec