Added SwiftNotificationCenter

fixes vsouza#809

README.md

@@ -385,6 +385,7 @@ Awesome-iOS is an amazing list for people who need a certain feature on their ap
  * [Bolts-Swift](https://github.com/BoltsFramework/Bolts-Swift) - Bolts is a collection of low-level libraries designed to make developing mobile apps easier. :large_orange_diamond:
  * [RWPromiseKit](https://github.com/deput/RWPromiseKit) - A light-weighted Promise library for Objective-C
  * [FutureLib](https://github.com/couchdeveloper/FutureLib) - FutureLib is a pure Swift 2 library implementing Futures & Promises inspired by Scala. :large_orange_diamond:
+ * [SwiftNotificationCenter](https://github.com/100mango/SwiftNotificationCenter) - A Protocol-Oriented NotificationCenter which is type safe, thread safe and with memory safety :large_orange_diamond:
 
 ### Files
 * [FileKit](https://github.com/nvzqz/FileKit) - Simple and expressive file management in Swift. :large_orange_diamond: