Added Krush Blokk match 3 game example

Please review and let me know what I screwed up and where! :)

Should only work with `loom use latest --firehose` for now due to the recently merged `OffsetTiledImage` functionality.
My inner Haxe is showing ;)
I got used to leaving out `private` there, as it's the default. I assume that's not kosher in LoomScript?