code: func (ns *Namespace) Querify(params ...interface{}) (string, error) {
  	qs := url.Values{}
  	vals, err := ns.Dictionary(params...)
  	if err != nil {
  		return "", errors.New("querify keys must be strings")
  	}
  
  	for name, value := range vals {
  		qs.Add(name, fmt.Sprintf("%v", value))
  	}
  
  	return qs.Encode(), nil
  }
docs: // Querify encodes the given parameters in URL-encoded form ("bar=baz&foo=quux") sorted by key.