title: Installing Rails: "File not found: lib" On Windows 7
body: <p>whenever I try to install Rails on windows7 , I get the error, File not found: lib. 
  please help me to solve this problem.</p>
  
  <hr>
  
  <p>I saw other post with exactly this problem but in ubuntu in this site : 
  <a href="https://stackoverflow.com/questions/4822052/installing-rails-file-not-found-lib">That link is here</a></p>
  
  <hr>