Add Awesome lists

Author: mrkn

index.md

@@ -33,3 +33,12 @@ There are several projects, organizations, and communities that aim to make data
 ## SciRuby
 
 [SciRuby](http://sciruby.com/) is a community of developers and users of data tools based on [nmatrix](http://sciruby.com/nmatrix/) library.
+
+## Awesome Lists
+
+There are useful lists of libraries, articles, and so on managed by [@arbox](https://github.com/arbox).
+
+- [arbox/machine-learning-with-ruby](https://github.com/arbox/machine-learning-with-ruby)
+- [arbox/nlp-with-ruby](https://github.com/arbox/nlp-with-ruby)
+- [arbox/data-science-with-ruby](https://github.com/arbox/data-science-with-ruby)
+- [arbox/ruby-interop](https://github.com/arbox/ruby-interoperability)