Use prettier badges. [ci skip]

Author: dblock

README.md

@@ -1,8 +1,10 @@
 # Hyperclient
 
-[![Build Status](https://secure.travis-ci.org/codegram/hyperclient.svg)](http://travis-ci.org/codegram/hyperclient)
-[![Dependency Status](https://gemnasium.com/codegram/hyperclient.svg)](http://gemnasium.com/codegram/hyperclient)
+[![Gem Version](http://img.shields.io/gem/v/hyperclient.svg)](http://badge.fury.io/rb/hyperclient)
+[![Build Status](http://img.shields.io/travis/codegram/hyperclient.svg)](https://travis-ci.org/codegram/hyperclient)
+[![Dependency Status](https://gemnasium.com/codegram/hyperclient.svg)](https://gemnasium.com/codegram/hyperclient)
 [![Code Climate](https://codeclimate.com/github/codegram/hyperclient.svg)](https://codeclimate.com/github/codegram/hyperclient)
+[![Coverage Status](https://img.shields.io/coveralls/codegram/hyperclient.svg)](https://coveralls.io/r/codegram/hyperclient?branch=master)
 
 Hyperclient is a Hypermedia API client written in Ruby. It fully supports [JSON HAL](http://stateless.co/hal_specification.html).