Merge pull request #2 from vialab/master

pull yo
Merge remote-tracking branch 'erik/master' into working
did a bunch of documentation
minor docs fix
added a touch colour tutorial
working on porting to android
removed unneccesary drawing from android test
SwipeKeyboardEvent.getSuggestions now returns an empty collection instead of null when it's swipe resolver is unavailable. Other small changes.
small adjustments to demo sketches and makefile
did some cleaning
working on the tuio duplication bug