Added downloads badge

README.md

@@ -7,6 +7,7 @@
 [![Issues](https://img.shields.io/github/issues/bizz84/SwiftyStoreKit.svg?style=flat)](https://github.com/bizz84/SwiftyStoreKit/issues)
 [![Cocoapod](http://img.shields.io/cocoapods/v/SwiftyStoreKit.svg?style=flat)](http://cocoadocs.org/docsets/SwiftyStoreKit/)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
+[![Downloads](https://img.shields.io/cocoapods/dm/SwiftyStoreKit.svg)]()
 [![Twitter](https://img.shields.io/badge/twitter-@biz84-blue.svg?maxAge=2592000)](http://twitter.com/biz84)
 
 SwiftyStoreKit is a lightweight In App Purchases framework for iOS 8.0+, tvOS 9.0+ and macOS 10.10+.