create project snippet installs code with a syntax error

[BrianWalters]

Just ran this from the readme:

composer create-project pattern-lab/edition-development-twig pattern-library && cd $_

And got this:

> PatternLab\Installer::postUpdateCmd
PHP Parse error:  syntax error, unexpected ')' in /Users/bdub/Projects/envirovantage-web-api-symfony/pattern-library/vendor/pattern-lab/core/src/PatternLab/InstallerUtil.php on line 353

Sure enough, in that file, there's an extra paren:

line 353:

					$pathName = $file->getPathname());