title: grunt-contrib-cssmin - how to remove comments from minified css
body: <p>Im using cssmin to minify css files.</p>
  
  <p>my config like this:</p>
  
  <pre><code>module.exports = function(grunt) {
  
      grunt.config.set('cssmin', {
          site: {
              src: ['.tmp/public/concat/site.css'],
              dest: '.tmp/public/min/site.min.css'
          }
      });
  
      grunt.loadNpmTasks('grunt-contrib-cssmin');
  };
  </code></pre>
  
  <p>But output minified css files has comments.  Is it possible to configure cssmin to remove comment from source css files?</p>
  
  <p>Thank you.</p>