NSAttributedString Syntax for Swift 2.0

NSAttributedString Syntax for Swift 1.2 

let attributedString = NSAttributedString(data: encodedData, options: attributedOptions, documentAttributes: nil, error: nil)!

NSAttributedString Syntax for Swift 2.0 

let attributedString = try! NSAttributedString(data: encodedData, options: attributedOptions, documentAttributes: nil)