code: func Send(w http.ResponseWriter, contentType string, data interface{}, rCode int) {
  	w.Header().Set(HeaderContentType, contentType)
  	w.WriteHeader(rCode)
  	_, err := fmt.Fprint(w, data)
  	if err != nil {
  		R500(w, ErrInternalServer)
  	}
  }
docs: // Send sends a completely custom response without wrapping in the
  // `{data: <data>, status: <int>` struct