Updated readme with new development instructions.
Updated readme with new development instructions.

connected-tv/tv-wall-pong,jrmhaig/tv-wall-pong,johnbeech/tv-wall-pong,connected-tv/tv-wall-pong,johnbeech/tv-wall-pong,jrmhaig/tv-wall-pong,connected-tv/tv-wall-pong,johnbeech/tv-wall-pong,jrmhaig/tv-wall-pong