title: How to update to Ruby 1.8.7
body: <p>I am new to Ruby, so bear with me.  I've been trying to update my Ruby to 1.8.7 and just ran into many issues on my Mac OS X (10.5.7).</p>
  
  <p>So really, how do you update to Ruby 1.8.7?</p>
  
  <p>Thanks.</p>