code: func hapiAdminExists(w http.ResponseWriter, r *http.Request) {
  	var count int
  	q := `SELECT COUNT(*) FROM users WHERE admin=TRUE LIMIT 1`
  	if err := db.Get(&count, q); err != nil {
  		writeErrorInternal(w, err)
  		return
  	}
  	byt, err := json.Marshal(count > 0)
  	if err != nil {
  		writeErrorInternal(w, err)
  		return
  	}
  	_, err = w.Write(byt)
  	if err != nil {
  		log.Info("failed writing response header.", err)
  	}
  }
docs: // hapiAdminExists checks if an admin exists in the database.