shuffle should have random param

README.md

@@ -46,7 +46,7 @@ Card o-- Suit
 class Pile extends ArrayList {
   public static Pile createDeck(int numberOfCards)
   public Pile getCardsForPlayer(int number)
-  public void shuffle()
+  public void shuffle(Random random)
   public boolean uniqueMaximum(Card max, int maxIndex)
 }