README.md in index_shotgun-0.3.0 vs README.md in index_shotgun-1.0.0

@@ -1,14 +1,12 @@
 # IndexShotgun :fire: :gun: :cop:
 [![Gem Version](https://badge.fury.io/rb/index_shotgun.svg)](http://badge.fury.io/rb/index_shotgun)
 [![Build Status](https://travis-ci.org/sue445/index_shotgun.svg?branch=master)](https://travis-ci.org/sue445/index_shotgun)
+[![CircleCI](https://circleci.com/gh/sue445/index_shotgun/tree/master.svg?style=svg)](https://circleci.com/gh/sue445/index_shotgun/tree/master)
 [![Code Climate](https://codeclimate.com/github/sue445/index_shotgun/badges/gpa.svg)](https://codeclimate.com/github/sue445/index_shotgun)
 [![Coverage Status](https://coveralls.io/repos/sue445/index_shotgun/badge.svg?branch=master&service=github)](https://coveralls.io/github/sue445/index_shotgun?branch=master)
-[![Dependency Status](https://gemnasium.com/sue445/index_shotgun.svg)](https://gemnasium.com/sue445/index_shotgun)
 
-[![wercker status](https://app.wercker.com/status/1af95c0c5debe57562ec3036c849f80d/m/master "wercker status")](https://app.wercker.com/project/bykey/1af95c0c5debe57562ec3036c849f80d)
-
 Duplicate index checker.
 
 This like [pt-duplicate-key-checker](https://www.percona.com/doc/percona-toolkit/2.1/pt-duplicate-key-checker.html), but also supports database other than MySQL
 
 ## Example
@@ -46,10 +44,10 @@
 # Total Indexes            6
 # Total Tables             5
 ```
 
 ## Requirements
-* Ruby 2.1+
+* Ruby 2.3+
 * Database you want to use (ex. MySQL, PostgreSQL or SQLite3)
 
 ## Installation
 
 Add this line to your application's Gemfile: