'advance' is unavailable: call the 'advancedBy(n)' method on the index

'advance' API has been removed in Swift 2.0

Below is some more examples

Solution is in the screenshot and below is the reference
http://stackoverflow.com/questions/32237243/advancedby-api-in-swift-2-0

AirPrint code in iOS8 with Swift

http://www.ioscreator.com/tutorials/airprint-tutorial-ios8-swift