Added gem version and codeclimate badges.

Author: dblock

Diff for: README.md

@@ -1,6 +1,8 @@
 # GrapeSwaggerRails
 
+[![Gem Version](https://badge.fury.io/rb/grape-swagger-rails.svg)](http://badge.fury.io/rb/grape-swagger-rails)
 [![Build Status](https://travis-ci.org/ruby-grape/grape-swagger-rails.svg)](https://travis-ci.org/ruby-grape/grape-swagger-rails)
+[![Code Climate](https://codeclimate.com/github/ruby-grape/grape-swagger-rails/badges/gpa.svg)](https://codeclimate.com/github/ruby-grape/grape-swagger-rails)
 
 Swagger UI as Rails Engine for grape-swagger gem.