README.md in ably-rest-0.9.0 vs README.md in ably-rest-0.9.1

@@ -1,6 +1,7 @@
 # [Ably](https://www.ably.io)
 
+[![Build Status](https://travis-ci.org/ably/ably-ruby-rest.png)](https://travis-ci.org/ably/ably-ruby-rest)
 [![Gem Version](https://badge.fury.io/rb/ably-rest.svg)](http://badge.fury.io/rb/ably-rest)
 
 A Ruby REST client library for [www.ably.io](https://www.ably.io), the realtime messaging service.
 
 Note: This library was created solely for developers who do not want EventMachine as a dependency of their application.  If this is not a requirement for you, then we recommended you use the combined [REST & Realtime gem](https://rubygems.org/gems/ably).