testing SplitScreen for iPad
more clear now
any split code now in ProMotion instead of the App
remove some debug code
cleanup
Preparing for merge
Merge branch 'splitscreen-v0.5' of git://github.com/rheoli/ProMotion into version-0.6
Revert "Merge branch 'splitscreen-v0.5' of git://github.com/rheoli/ProMotion into version-0.6"

This reverts commit 382b5c9f999e2a8ba55afe846e7641483322e3e5, reversing
changes made to 8f86423c6e8fcd1dc6a786de668fd14a5453bcc2.
Tests pass, split screen looking good.