fixed the responsive example - spriteMiddle was not defined and using game instead of this.game was breaking the entire example

Author: rsadwick

resources/Project Templates/Responsive/MainMenu.js

@@ -17,15 +17,17 @@ BasicGame.MainMenu.prototype = {
 
 	    this.spriteTopLeft = this.add.sprite(0, 0, 'tetris3');
 
-	    this.spriteTopRight = this.add.sprite(game.width, 0, 'tetris1');
+	    this.spriteTopRight = this.add.sprite(this.game.width, 0, 'tetris1');
 	    this.spriteTopRight.anchor.set(1, 0);
 
-	    this.spriteBottomLeft = this.add.sprite(0, game.height, 'tetris2');
+	    this.spriteBottomLeft = this.add.sprite(0, this.game.height, 'tetris2');
 	    this.spriteBottomLeft.anchor.set(0, 1);
 
-	    this.spriteBottomRight = this.add.sprite(game.width, game.height, 'tetris3');
+	    this.spriteBottomRight = this.add.sprite(this.game.width, this.game.height, 'tetris3');
 	    this.spriteBottomRight.anchor.set(1, 1);
 
+        this.spriteMiddle = this.add.sprite(0, 0, 'hotdog');
+
 	},
 
 	update: function () {