code: function(key, value, type) {
      var val = utils.get(this.options, key);
      if (typeof val === 'undefined' || (type && utils.typeOf(val) !== type)) {
        return value;
      }
      return val;
    }
docs: Returns the value of `key` or `value`, Or, if `type` is passed
  and the value of `key` is not the same javascript native type
  as `type`, then `value` is returned.
  
  ```js
  app.option('admin', true);
  console.log(app.either('admin', false));
  //=> true
  
  console.log(app.either('collaborator', false));
  //=> false
  ```
  @param {String} `key`
  @param {any} `value`
  @param {String} `type` Javascript native type (optional)
  @return {Object}
  @api public