code: function saveCategoryList(categoryObject){
      var destinationPath = config.dest + 'db_category_list.json';
      grunt.file.write(destinationPath, JSON.stringify(categoryObject, null, 4));
      grunt.log.writeln('Prefixed file "' + destinationPath + '" created.');
    }
docs: Save the category List as json file
  @author Dariel Noel <darielnoel@gmail.com>
  @since  2015-03-10
  @param  {[type]}   categoryObject [description]
  @return {[type]}                  [description]