Calls 'rm -rfP the-path' to securely delete the given file or folder. From the OS X rm man documentation (https://developer.apple.com/library/mac/documentation/Darwin/Reference/Manpages/man1/rm.1.html): Option -P: Overwrite regular files before deleting them. Files are overwritten three times, first with the byte pattern 0xff, then 0x00, and then 0xff again, before they are deleted.
