initial main.go in init branch

gomongo_init_main.go

func main() {

	// create anew http router
	rtr := mux.NewRouter()

	// health endpoint
	rtr.HandleFunc("/health", services.Health).Methods(get)

	// use go routinue to serve endpoint
	ctx := context.Background()

	GracefullyListenAndServe(ctx, addr, rtr)
}