Upgrade syntax of everything to more modern javascript

protocols/jc2mp.js

@@ -1,24 +1,18 @@
-/*
-module.exports = require('./valve').extend({
-	init: function() {
-		this._super();
-	}
-});
-*/
-
 // supposedly, gamespy3 is the "official" query protocol for jcmp,
 // but it's broken (requires useOnlySingleSplit), and doesn't include player names
-module.exports = require('./gamespy3').extend({
-	init: function() {
-		this._super();
+class Jc2mp extends require('./gamespy3') {
+	constructor() {
+		super();
 		this.useOnlySingleSplit = true;
-	},
-	finalizeState: function(state) {
-		this._super(state);
+	}
+	finalizeState(state) {
+		super.finalizeState(state);
 		if(!state.players.length && parseInt(state.raw.numplayers)) {
-			for(var i = 0; i < parseInt(state.raw.numplayers); i++) {
+			for(let i = 0; i < parseInt(state.raw.numplayers); i++) {
 				state.players.push({});
 			}
 		}
 	}
-});
+}
+
+module.exports = Jc2mp;