Enhancement: ignore .phar file
Bugfix: skip files which are links

 * example use-case: bin roles from a composer installed package
   create symlinks inside the project. when this symlink is followed
   and the path is expanded (`$file->getRealPath()`) it barfs
Merge pull request #37 from easybiblabs/bugfix/loop-on-links-causes-exception

Bugfix/loop on links causes exception