permit pathnames, e.g. "/Volumes/Bubba Two/readerArchive", with embedded spaces

Per http://stackoverflow.com/questions/7535677/bash-passing-paths-with-spaces-as-parameters, allowed me to back up to another Volume that was named with an embedded space.
Merge pull request #9 from citizentools/patch-1

permit pathnames, e.g. "/Volumes/Bubba Two/rarch", with embedded spaces