Add some badges to README

Author: hamchapman

README.md

@@ -1,7 +1,11 @@
 # PusherSwift (pusher-websocket-swift)
 
 [![Build Status](https://travis-ci.org/pusher-community/pusher-websocket-swift.svg?branch=master)](https://travis-ci.org/pusher-community/pusher-websocket-swift)
+[![Cocoapods Compatible](https://img.shields.io/cocoapods/v/PusherSwift.svg)](https://img.shields.io/cocoapods/v/PusherSwift.svg)
+[![Platform](https://img.shields.io/cocoapods/p/PusherSwift.svg?style=flat)](http://cocoadocs.org/docsets/PusherSwift)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
+[![Twitter](https://img.shields.io/badge/twitter-@Pusher-blue.svg?style=flat)](http://twitter.com/Pusher)
+
 
 ## Table of Contents