Fix: fetch do not find UNIX hidden files with dot at first char (e.g. OS X hidden files ".DS_Store"). So method removeFolderAtPath cannot remove non empty folder.
Merge pull request #22 from alex-v1981/fetch_fix

Fix: fetch do not find UNIX hidden files with dot at first char (e.g. OS X hidden files ".DS_Store"). So method removeFolderAtPath cannot remove non empty folder.