api/info.go
func info(w http.ResponseWriter, r *http.Request) error {
	data := map[string]string{}
	data["version"] = Version
	w.Header().Set("Content-Type", "application/json")
	return json.NewEncoder(w).Encode(data)
}
func info(w http.ResponseWriter, r *http.Request) error {
	data := map[string]string{}
	data["version"] = Version
	w.Header().Set("Content-Type", "application/json")
	return json.NewEncoder(w).Encode(data)
}
// title: api info
// path: /info
// method: GET
// produce: application/json
// responses:
//   200: OK