Working on Swift 2.2

Author: Rui Peres

README.md

@@ -2,7 +2,7 @@
 
 ![](https://travis-ci.org/RuiAAPeres/OptionalExtensions.svg?branch=master)
 <a href="https://github.com/Carthage/Carthage"><img src="https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat"></a>
-[![Swift 2.1](https://img.shields.io/badge/Swift-2.1-orange.svg?style=flat)](https://developer.apple.com/swift/)
+[![Swift 2.2](https://img.shields.io/badge/Swift-2.2-orange.svg?style=flat)](https://developer.apple.com/swift/)
 [![License MIT](https://img.shields.io/badge/License-MIT-lightgrey.svg?style=flat)](https://opensource.org/licenses/MIT)
 ![](https://camo.githubusercontent.com/410f44c161ebf367eacb1fcce9121e336e211bc6/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f506c6174666f726d2d696f732532302537432532306f737825323025374325323077617463686f7325323025374325323074766f732d6c69676874677265792e7376673f7374796c653d666c6174)