code: function handleMismatch(results, config) {
    if (results.length) {
      var message = 'Out of date packages: \n' + results.map(function (p) {
        return moduleInfo(p);
      }).join('\n');
      if (config.throw === undefined || config.throw !== undefined && config.throw) {
        throw new _gulpUtil.PluginError('gulp-npm-check', {
          name: 'NpmCheckError',
          message: message
        });
      } else {
        (0, _gulpUtil.log)(_gulpUtil.colors.yellow('gulp-npm-check\n', message));
      }
    } else {
      (0, _gulpUtil.log)('All packages are up to date :)');
    }
  }
docs: do things with results
  @param  {array} results results from npm-check
  @param  {config} config object
   
  Default method
  @param  {!config} config object
  @param  {Function} cb callback