README.md in nsrr-0.4.0.beta1 vs README.md in nsrr-0.4.0.rc

@@ -8,12 +8,12 @@
 
 ## Prerequisites
 
 You must have **Ruby 2.2+ installed** on your system to use the NSRR gem.
 
-- [Install Ruby on Windows](http://rubyinstaller.org/)
-- [Install Ruby on Mac](https://github.com/remomueller/documentation/blob/master/macosx/140-install-ruby.md)
-- [Install Ruby on Linux (CentOS)](https://github.com/remomueller/documentation/blob/master/centos/140-install-ruby.md)
+- [Install Ruby on Windows](https://github.com/remomueller/documentation/blob/master/windows/130-ruby.md)
+- [Install Ruby on Mac](https://github.com/remomueller/documentation/blob/master/macosx/130-install-rvm.md)
+- [Install Ruby on Linux (CentOS)](https://github.com/remomueller/documentation/blob/master/centos/130-install-rvm.md)
 
 ## Installation
 
 The following commands can be run in **Command Prompt** on Windows, and in **Terminal** on Mac OS X.