README.md in minke-1.13.19 vs README.md in minke-1.13.20

- old
+ new
@@ -4,9 +4,10 @@
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 | Stories Ready: | [![Stories in Ready](https://badge.waffle.io/nicholasjackson/minke.png?label=ready&title=Ready)](https://waffle.io/nicholasjackson/minke) |
 | Test Coverage: | [![Test Coverage](https://codeclimate.com/github/nicholasjackson/minke/badges/coverage.svg)](https://codeclimate.com/github/nicholasjackson/minke/coverage) |
 | Build Status: | [![Build Status](https://travis-ci.org/nicholasjackson/minke.svg?branch=master)](https://travis-ci.org/nicholasjackson/minke) [ ![Codeship Status for nicholasjackson/minke](https://codeship.com/projects/9e365bb0-46c3-0134-0bf1-568f97ef61e4/status?branch=master)](https://codeship.com/projects/168996) |
 | Chat: | [![Join the chat at https://gitter.im/nicholasjackson/minke](https://badges.gitter.im/nicholasjackson/minke.svg)](https://gitter.im/nicholasjackson/minke?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) |
+| Ruby Doc: | [http://www.rubydoc.info/gems/minke/1.13.19/index](http://www.rubydoc.info/gems/minke/1.13.19/index) |
 
 # Documentation and Tutorial 
 [https://minke.rocks/index.html](http://minke.rocks/index.html)
 
 # Quick Start