README.md in redis-helper-1.2.0 vs README.md in redis-helper-1.2.1

@@ -1,6 +1,6 @@
-# Redis::Helper
+# [Redis::Helper](https://github.com/Narazaka/redis-helper)
 
 [![Gem](https://img.shields.io/gem/v/redis-helper.svg)](https://rubygems.org/gems/redis-helper)
 [![Gem](https://img.shields.io/gem/dtv/redis-helper.svg)](https://rubygems.org/gems/redis-helper)
 [![Gemnasium](https://gemnasium.com/Narazaka/redis-helper.svg)](https://gemnasium.com/Narazaka/redis-helper)
 [![Inch CI](http://inch-ci.org/github/Narazaka/redis-helper.svg)](http://inch-ci.org/github/Narazaka/redis-helper)
@@ -26,9 +26,11 @@
 Or install it yourself as:
 
     $ gem install redis-helper
 
 ## Usage
+
+[API Documents](http://www.rubydoc.info/gems/redis-helper/)
 
 ```ruby
 class Foo < ActiveRecord::Base
   include Redis::Helper
   define_attr_keys :bar_count