README.md in annoy-rb-0.2.0 vs README.md in annoy-rb-0.2.1

@@ -1,8 +1,8 @@
 # Annoy.rb
 
-[![Build Status](https://travis-ci.org/yoshoku/annoy.rb.svg?branch=master)](https://travis-ci.org/yoshoku/annoy.rb)
+[![Build Status](https://github.com/yoshoku/annoy.rb/workflows/build/badge.svg)](https://github.com/yoshoku/annoy.rb/actions?query=workflow%3Abuild)
 [![Gem Version](https://badge.fury.io/rb/annoy-rb.svg)](https://badge.fury.io/rb/annoy-rb)
 [![License](https://img.shields.io/badge/License-Apache%202.0-yellowgreen.svg)](https://github.com/yoshoku/annoy.rb/blob/master/LICENSE.txt)
 [![Documentation](http://img.shields.io/badge/api-reference-blue.svg)](https://yoshoku.github.io/annoy.rb/doc/)
 
 Annoy.rb is a Ruby binding for the [Annoy (Approximate Nearest Neighbors Oh Yeah)](https://github.com/spotify/annoy).
@@ -22,9 +22,13 @@
 Or install it yourself as:
 
     $ gem install annoy-rb
 
 Note: Annoy.rb does not require the installation of another external library.
+
+## Documentation
+
+* [Annoy.rb API Documentation](https://yoshoku.github.io/annoy.rb/doc/)
 
 ## Usage
 
 ```ruby
 require 'annoy'