README.md in rakuten_web_service-0.1.0 vs README.md in rakuten_web_service-0.1.1

- old
+ new

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 # RakutenWebService
 
-[![Build Status](https://travis-ci.org/satoryu/rakuten_web_service.png?branch=master)](https://travis-ci.org/satoryu/rakuten_web_service)
+[![Build Status](https://travis-ci.org/satoryu/rakuten_web_service.png?branch=master)](https://travis-ci.org/satoryu/rakuten_web_service) [![Gem Version](https://badge.fury.io/rb/rakuten_web_service.png)](http://badge.fury.io/rb/rakuten_web_service)
 
 ## Installation
 
 Add this line to your application's Gemfile:
 