link to ruby-lang.org

README.md

@@ -39,7 +39,7 @@ Installing
 * python2.7-dev (for Python bindings)
 * a JDK (for Java bindings)
 * a working [phpenv](https://github.com/CHH/phpenv) configuration (for PHP bindings)
-* Ruby >= 1.9.3 and bundler, for the Ruby bindings
+* [Ruby](https://www.ruby-lang.org/) >= 1.9.3 and bundler, for the Ruby bindings
 * mono-devel and mono-mcs (>= 3.0.6) (for .NET bindings)
 * nunit (for testing .NET bindings)