Slight change

Board.py

@@ -24,6 +24,7 @@ def __init__(self, n, canvas, window_height, window_width):
 		self.window_width = window_width
 
 	def render(self, game):
+		time.sleep(0.05)
 		self.canvas.delete("all")
 		self.draw_squares()
 		self.draw_board_labels()

server.py

@@ -174,7 +174,9 @@ def playTak(self,n,timelimit,client_0,client_1):
 	parser.add_argument('-NC', dest = 'num_clients', metavar = 'num_clients', type = int, default = 2, help = 'Number of clients connecting to the server')
 	parser.add_argument('-TL', dest = 'time_limit', metavar = 'time_limit', type = int, default = 120, help = 'Time limit (in s)')
 	args = parser.parse_args()
-
+	if args.n < 5 or args.n > 7:
+		print 'Game size should be 5x5, 6x6 or 7x7.'
+		sys.exit()
 	local_Server.BuildServer(args.port, args.num_clients)
 	if(local_Server.client_count < 2):
 		local_Server.SendInitError2Clients()