public function runCommand($host = '127.0.0.1', $port = 8081)
{
$command = Scripts::buildPhpCommand($this->settings);
$address = sprintf('%s:%s', $host, $port);
$command .= ' -S ' . escapeshellarg($address) . ' -t ' . escapeshellarg(FLOW_PATH_WEB) . ' ' . escapeshellarg(FLOW_PATH_FLOW . '/Scripts/PhpDevelopmentServerRouter.php');
$this->outputLine('Server running. Please go to <b>http://' . $address . '</b> to browse the application.');
exec($command);
}