README.md in daigaku-0.1.1 vs README.md in daigaku-0.2.0

- old
+ new

@@ -14,10 +14,11 @@
 language-explaining programming tasks.
 
 ## Installation
 
 First of all make sure Ruby is installed on your computer.
+Daigaku works with [MRI Ruby](https://www.ruby-lang.org/en/documentation/installation/) v2.x and [Rubinius](http://rubini.us/doc/en/getting-started/) v2.x.
 
 Then open a terminal and install Daigaku by running:
 
     $ gem install daigaku
 
@@ -48,9 +49,11 @@
 ![Daigaku screen screenshot](http://res.cloudinary.com/daigaku-ruby/image/upload/v1430859202/daigaku-taskview_erwzrh.png)
 
 ## Contributing
 
 We encourage you to contribute to Daigaku development and course creation.
+
+This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant code of conduct](http://contributor-covenant.org/version/1/2/0).
 
 ### Creating Daigaku courses
 
 Daigaku is a great tool, but it's nothing without courses to learn from.
 Go ahead and help with making Daigaku a worthwile and fun resource for learning Ruby!