BluesBox v2

We finally uploaded the BluesBox v2 to Marketplace. Should be available soon.

Beyond Daryl "Mad dog" Ooh's new UI design, I also added a bit more functionality to support doing the background bass playing so two or more people can play together.

Also included a tutorial video and did a hell lot of bug fixing. We had a few issues around multi touch (it can be tricky when dealing with sliding around the notes and controling which sounds need to start/stop) but I think I managed to fix everything now.

You can watch it working here: https://www.youtube.com/watch?v=ftyFeBbz-9M

I already have a whole lot of cool ideas for next version, but way too little time to build it. So far I spent less than two days with building this thing. I think I need a part time job :(