Merge pull request #6 from Azure/moderakh-markdown

code coverage

Author: moderakh

README.md

@@ -1,6 +1,8 @@
 # Java RX SDK for Azure DocumentDB
 
 [![Build Status](https://api.travis-ci.org/Azure/azure-documentdb-rxjava.svg?branch=master)](https://travis-ci.org/Azure/azure-documentdb-rxjava)
+[![Coverage Status](https://img.shields.io/codecov/c/github/Azure/azure-documentdb-rxjava.svg)](https://codecov.io/gh/Azure/azure-documentdb-rxjava)
+
 
 
 ## License