Update README.md

README.md

@@ -1,8 +1,7 @@
 # Card Game
 
 ```plantuml
-
-CardGame --|> Pile
+CardGame o-- Pile
 class CardGame {
     int numberOfPlayers;
     public Player[] players;
@@ -14,8 +13,8 @@ class CardGame {
     public void play()
 }
 
-Player --|> Pile
-Pile --|> Card
+Player o-- Pile
+
 
 class Player {
     String name;
@@ -27,7 +26,16 @@ class Player {
     public int cardsCount()
 }
 
-class Pile {
+ArrayList *-- Card
+
+class ArrayList< Card > {
+  public boolean isEmpty()
+  public int size()
+  public boolean add(Card card)
+  public boolean addAll(Collection<Card> card)  
+}
+
+class Pile extends ArrayList {
   public static Pile createDeck(int numberOfCards)
   public Pile getCardsForPlayer(int number)
   public void shuffle()