Add scanning animation to the game

I think I've done this wrong & cloned the wrong repo (I'm in /hawkthorne rather than /edisonout) but let's see if this works

This is the start of getting scanning animation in the game - Jeff, Shirley, Troy & Pierce still need their pictures re-doing, need to do transitions and fix background colour but it'll give you some idea what I'm up to.

[Video of it in action](http://www.youtube.com/watch?v=rJCGDNVpLX0)