improve comments in game manager

Author: gabrielecirulli

js/game_manager.js

@@ -16,14 +16,14 @@ function GameManager(size, InputManager, Actuator, StorageManager) {
 // Restart the game
 GameManager.prototype.restart = function () {
   this.storageManager.clearGameState();
-  this.actuator.continue();
+  this.actuator.continue(); // Clear the game won/lost message
   this.setup();
 };
 
-// Keep playing after winning
+// Keep playing after winning (allows going over 2048)
 GameManager.prototype.keepPlaying = function () {
   this.keepPlaying = true;
-  this.actuator.continue();
+  this.actuator.continue(); // Clear the game won/lost message
 };
 
 // Return true if the game is lost, or has won and the user hasn't kept playing