static void Main(string[] args)
        {

            RankGameRoom room101 = new RankGameRoom();

            Player player01 = new Player("penspanic");
            Player player02 = new Player("Geun Hee");

            player01.Join(room101);
            player02.Join(room101);

            room101.GameStart();

        }
        public void Join(Player player)
        {
            if (playerList.Count == capacity)
            {
                player.Notify("This room is full!");
                return;
            }

            playerList.Add(player);
            player.Notify(joinMessage);

            foreach (Player eachPlayer in playerList)
            {
                if (eachPlayer == player)
                    continue;

                eachPlayer.Notify(player.name + " Joined!");
            }
        }