Add window to menu to see if the user is authenticated (ToDo)

GoldWars/GoldWars/Scenes/MenuScene.swift

@@ -54,6 +54,13 @@ class MenuScene: SKScene {
                 node.position.x += (self.scene?.size.width)! * 3
             }
         }))
-	}
         
+        // TODO: Notfalllösung
+        if(!GameCenterHelper.isAuthenticated) {
+            let label = SKLabelNode(text: "Authenticated")
+            label.zPosition = 2
+            label.position = CGPoint(x: self.size.width / 2, y: self.size.height / 2)
+            self.addChild(label)
+        }
+    }
 }