#1026
Fix for multi-touch on mobile devices.
So far tested on BB10.  Checking in so I can deploy to iPhone and Android.
Replacing a magic number with a constant.
Merge branch 'master' of https://github.com/blackberry/GamePlay
Merge pull request #1034 from ablake/master

Multi-touch fix.
Fix TextBox documentation
Merge pull request #1037 from Pixelized/fix-text-box-documentation

Fix TextBox documentation
Merge pull request #1038 from blackberry/master

Merge master to next