Merge pull request #606 from reidab/patch-3

Add gem version badge to README

Author: lgebhardt

README.md

@@ -1,4 +1,4 @@
-# JSONAPI::Resources [![Build Status](https://secure.travis-ci.org/cerebris/jsonapi-resources.svg?branch=master)](http://travis-ci.org/cerebris/jsonapi-resources) [![Code Climate](https://codeclimate.com/github/cerebris/jsonapi-resources/badges/gpa.svg)](https://codeclimate.com/github/cerebris/jsonapi-resources)
+# JSONAPI::Resources [![Gem Version](https://badge.fury.io/rb/jsonapi-resources.svg)](https://badge.fury.io/rb/jsonapi-resources) [![Build Status](https://secure.travis-ci.org/cerebris/jsonapi-resources.svg?branch=master)](http://travis-ci.org/cerebris/jsonapi-resources) [![Code Climate](https://codeclimate.com/github/cerebris/jsonapi-resources/badges/gpa.svg)](https://codeclimate.com/github/cerebris/jsonapi-resources)
 
 [![Join the chat at https://gitter.im/cerebris/jsonapi-resources](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/cerebris/jsonapi-resources?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)