title: Error: File to import not found or unreadable: compass. in rails 3.1
body: <p>I am given a rails project to configure. 
  I am using <strong>UBUNTU</strong> 
  Rails 3.1
  Ruby 1.9.2</p>
  
  <p>I am facing error below:</p>
  
  <pre><code> File to import not found or unreadable: compass.
   Load path: 
   Sass::Rails::Importer(/Project/app/assets/stylesheets/blueprint.sass)
  </code></pre>
  
  <p>(in /Project/app/assets/stylesheets/blueprint.sass)</p>
  
  <p>I found in <code>blueprint.sass</code>, below code is written</p>
  
  <pre><code>@import 'compass'
  @import "compass/reset"
  @import "compass/layout/sticky-footer"
  @import '_blueprint'
  @include blueprint
  </code></pre>
  
  <p>But there is no compass folder exists in the <code>stylesheet</code> folder in rails.I installed <code>gem compass</code>.</p>
  
  <p>I am trying to solve this problem since moring but could not get success :S ?
   What should I do to make this work.</p>