title: Unable to install gem autotest-fsevent on Mavericks
body: <p>It's been two days trying to install the gem autotest-fsevent, but i get this error message:</p>
  
  <pre><code>Building native extensions.  This could take a while...
  ERROR:  Error installing autotest-fsevent:
  ERROR: Failed to build gem native extension.
  
  /Users/samolo/.rvm/rubies/ruby-2.0.0-p247/bin/ruby extconf.rb
  extconf.rb:24:in `&lt;main&gt;': Darwin 13 is not (yet) supported (RuntimeError)
  
  Gem files will remain installed in /Users/samolo/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/gems/2.0.0/gems/autotest-fsevent-0.2.8 for inspection.
  Results logged to /Users/samolo/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/gems/2.0.0/gems/autotest-fsevent-0.2.8/ext/fsevent/gem_make.out
  </code></pre>
  
  <p>I tried this solution: "<a href="https://stackoverflow.com/questions/19553436/gem-install-autotest-fsevent-failing-after-update-to-macosx-mavericks">gem install autotest-fsevent failing after update to macosx mavericks</a>", but nothing change. I also tried too put <code>gem "autotest-fsevent", "~&gt; 0.2.8"</code> into Gemfile, but i get the same error.
  May be a suggestion?
  I using ruby 2.0.0 and rails 4.0.0.</p>