title: Ruby 1.9.3 installed, but still says I'm running Ruby 1.8.7
body: <p>I just used RVM to update my Ruby version to 1.9.3 from 1.8.7. Everything compiled and worked perfectly (as far as I can tell, no errors from RVM or anything), but when I type <code>ruby -v</code>, my machine tells me I'm still running 1.8.7. Did I miss a step in my installation? I'm running OSX Lion. </p>