title: Setting up grunt-contrib-sass with node-bourbon
body: <p>I am trying to add bourbon as a dependency to a project where <code>grunt-contrib-sass</code> is used. <a href="https://npmjs.org/package/node-bourbon" rel="nofollow">node-bourbon</a> has the following to say about grunt and Sass integration:</p>
  
  <pre><code>grunt.initConfig({
    sass: {
      dist: {
        options: {
          // THIS IS THE LINE I ADDED TO MY CONFIG
          includePaths: require('bourbon').includePaths,
          outputStyle: 'compressed'
        },
        files: {
          'path/to/output.css': 'path/to/input.scss'
        }
      }
    }
  });
  </code></pre>
  
  <p>However, when running grunt I get the following error:</p>
  
  <pre><code>OptionParser::InvalidOption: invalid option: --include-paths
  </code></pre>
  
  <p>This error appears with any array of paths given to <code>includePaths</code>, not just bourbon. </p>
  
  <p>What am I doing wrong?</p>