Update README.md

Author: Sharon Shabtai

README.md

@@ -1,6 +1,7 @@
 # Spectra Rio Broker .NET SDK
 
 [![Build Status](https://travis-ci.org/SpectraLogic/ep_net_sdk.svg)](https://travis-ci.org/SpectraLogic/ep_net_sdk)
+[![Apache V2 License](http://img.shields.io/badge/license-Apache%20V2-blue.svg)](https://github.com/SpectraLogic/ep_net_sdk/blob/master/LICENSE.md)
 
 An [SDK](http://en.wikipedia.org/wiki/Software_development_kit) conforming to
 the Spectra Rio Broker specification.