added comment

main.go

@@ -18,7 +18,7 @@ func main() {
 		port = "5000"
 	}
 
-	// creating a subrouter with a fixed path
+	// creating a sub-router with a fixed path that only accepts GET-requests
 	c := r.PathPrefix("/conservation/v1").Methods("GET").Subrouter()
 
 	// two handlerpaths makes sure that the caller does not HAVE to specify limit