protected function execute(InputInterface $input, OutputInterface $output)
{
$output->writeln('---------------------------');
$output->writeln('Welcome to the game of life');
$output->writeln('---------------------------');
$dimension = $input->getArgument('dimension');
$universe = new Universe($dimension);
$universe->buildRandomUniverse();
while (true) {
echo $universe->paint();
$universe->envolve();
}
}
