Update ST2.2.0RC to ST2.2.0.

Upgraded via auto upgrade from RC to final 2.2.0 release of SenchaTouch.
Merge branch 'master' of https://github.com/nwolverson/PropertyCross into wp8
Merge pull request #123 from nwolverson/wp8

SenchaTouch 2.2 release and WP8 support