First, you'll need an Apple Developer account, which is $99 a year.
Then, you'll create a Development Provisioning File using iTunes Connect, this will allow you to provision your mobile device to use your game.
Once you want to publish it to the App-Store, you will need to obtain a Distribution Provisioning File and Certificate using Apples KeyChain.
You'd then upload your IPA and Distribution Profile through Apple's Application Loader to load it to the App-Store
http://www.appgamekit.com/documentation/guides/52_ios.htm
Robert Janes (Samu Games)
http://www.samugames.com/artifact