protected function updateComposer($dir) {
		if(strtoupper(substr(PHP_OS, 0, 3)) === 'WIN')
			$cmd = '"vendor/bin/composer.bat" update --working-dir "'.$dir.'"';
		else
			$cmd = './vendor/bin/composer update --working-dir "'.$dir.'"';
		return $this->runCommand($cmd);
	}