Add warning when connection port is unknown.

bin/gamedig.js

@@ -21,6 +21,7 @@ for(var key in argv) {
 
 var Gamedig = require('../lib/index');
 if(debug) Gamedig.debug = true;
+Gamedig.isCommandLine = true;
 Gamedig.query(
 	options,
 	function(state) {

lib/index.js

@@ -44,6 +44,20 @@ Gamedig = {
 		query.udpSocket = udpSocket;
 		query.type = options.type;
 		
+		if(!('port' in query.options) && ('port_query' in query.options)) {
+			if(Gamedig.isCommandLine) {
+				process.stderr.write(
+					"Warning! This game is so old, that we don't know"
+					+" what the server's connection port is. We've guessed that"
+					+" the query port for "+query.type+" is "+query.options.port_query+"."
+					+" If you know the connection port for this type of server, please let"
+					+" us know on the GameDig issue tracker, thanks!\n"
+				);
+			}
+			query.options.port = query.options.port_query;
+			delete query.options.port_query;
+		}
+		
 		// copy over options
 		for(var i in options) query.options[i] = options[i];