Fix up constructor

src/frontend/game.js

@@ -2,11 +2,11 @@ import Phaser from 'phaser';
 import TestScene from './scenes/test';
 
 class Game {
-  constructo() {
+  constructor(width, height) {
     this.config = {
       type: Phaser.AUTO,
-      width: 800,
-      height: 600,
+      width: width,
+      height: height,
       scene: TestScene
     };
 

src/widget.js

 import WidgetBackend from './backends/widget';
 import Game from './frontend/game';
 
-let game = new Game();
+const width = 800;
+const height = 600;
+
+let game = new Game(width, height);