title: Trouble installing nodejs gem
body: <p>I'm having some trouble installing the nodejs gem. I believe my situation is similar to the question posted <a href="https://stackoverflow.com/revisions/7481391/5">here</a>, so I followed the instructions and added gem 'nodejs' to the gemfile, but I'm getting the error</p>
  
  <pre><code>Could not find gem 'nodejs (&gt;= 0) ruby' in the gems available on this machine.
  </code></pre>
  
  <p>Does anyone know how to resolve this issue? </p>