README.md in itest5ch-1.0.0 vs README.md in itest5ch-2.0.0

- old
+ new
@@ -1,9 +1,12 @@
 # Itest5ch
 
 5ch (a.k.a. 2ch) reader via http://itest.5ch.net/
 
-[![CircleCI](https://circleci.com/gh/sue445/itest5ch/tree/master.svg?style=svg&circle-token=6424acab43b6dd71c3e09619ff7bb2e9b5611aa0)](https://circleci.com/gh/sue445/itest5ch/tree/master)
+[![Gem Version](https://badge.fury.io/rb/itest5ch.svg)](https://badge.fury.io/rb/itest5ch)
+[![CircleCI](https://circleci.com/gh/sue445/itest5ch/tree/master.svg)](https://circleci.com/gh/sue445/itest5ch/tree/master)
+[![Coverage Status](https://coveralls.io/repos/github/sue445/itest5ch/badge.svg)](https://coveralls.io/github/sue445/itest5ch)
+[![Maintainability](https://api.codeclimate.com/v1/badges/14a81b3f7da11e475242/maintainability)](https://codeclimate.com/github/sue445/itest5ch/maintainability)
 
 ## Installation
 
 Add this line to your application's Gemfile:
 