Add a gem version

Author: thomasrockhu

README.md

@@ -1,4 +1,5 @@
-codecov-ruby [![Build Status](https://secure.travis-ci.org/codecov/codecov-ruby.svg?branch=master)](http://travis-ci.org/codecov/codecov-ruby) [![codecov.io](https://codecov.io/github/codecov/codecov-ruby/coverage.svg?branch=master)](https://codecov.io/github/codecov/codecov-ruby?branch=master)
+# codecov-ruby 
+[![Gem Version](https://badge.fury.io/rb/codecov.svg)](https://badge.fury.io/rb/codecov) [![Build Status](https://secure.travis-ci.org/codecov/codecov-ruby.svg?branch=master)](http://travis-ci.org/codecov/codecov-ruby) [![codecov.io](https://codecov.io/github/codecov/codecov-ruby/coverage.svg?branch=master)](https://codecov.io/github/codecov/codecov-ruby?branch=master)
 
 ## Usage