Searching for binary rubies, this might take some time. No binary rubies available for: osx/10.8/x86_64/ruby-1.9.3-p392. Continuing with compilation. Please read 'rvm mount' to get more information on binary rubies. Installing requirements for osx, might require sudo password. Skipping `brew update` make sure your formulas are up to date. Cowardly refusing to continue, please read 'rvm autolibs'.
Your system is raring to brew.
\curl -L https://get.rvm.io | bash -s stable --rails --autolibs=enabled
rvm list known
rvm get stable