Add trophy support
Submitted by Robert Ancell
Trophies are commonly used in modern games to give another layer of gaming. They allow players to have extra goals in the game, for example beating the AI on each difficulty level, or completing a puzzle in a certain amount of time. They act like a high score table except you don't need other players to beat them.
See http://en.wikipedia.org/wiki/Achievement_%28video_gaming%29 for more information.
Version: git master