game_delete + edit README

game.c

@@ -62,6 +62,12 @@ bool game_equal(cgame g1, cgame g2) {
 }
 
 void game_delete(game g) {
+	for (int i = 0; i < DEFAULT_SIZE; i++) {
+		free(g->tab_cell[i]);
+		g->tab_cell[i] = NULL;
+	}
+	free(g);
+	g = NULL;
 	return;
 }