title: Game Center Integration for iPhone game?
body: <p>Im a beginner for developing IOS applications mainly games. I have the game completed and have submitted it to the app store. In the mere future I want to submit an update which will include game center, primarily leader boards for scores (all time, monthly, weekly, and today). I'm having trouble understanding how to integrate the completed game with game-center. Another part that is unclear to me is what do I write in the code and how does gamekit framework know which number (score) to submit to game center. If anyone could provide detailed information I'd greatly appreciate it. Thanks!</p>