title: Middleman for Rails 4
body: <p>I tried googling for a rails 4 version of Middleman but came up empty-handed. Is there a way to get middleman to work with Rails 4? Whenever I try to start my server now it says: </p>
  
  <pre><code>C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/middleman-0.13.1/lib/middle
  man/vendor/gems/environment.rb:3: Use RbConfig instead of obsolete and deprecate
  d Config.
  </code></pre>
  
  <p>Is there a way to fix this, or is there a middleman-equivalent that does work with rails 4?</p>
  
  <p>edit: P.S Slimgems didn't work :(</p>