ios improvements and new example
A number of improvements and a new ios example
- expose more module options in the ios build process
- add support for gesture based events
- add gesture reconition for cases where the native gesture recognizers are not used
- modify the multitouch interactor style to be based off the gestures
- modify the plane widget to support the pinch gesture as an example
- create a new iOS example called planeview that demonstrates
- using multitouch gestures
- loading data from a cloud provider
- using a splash screen
- using a settings page to control options
- using a probe widget