first commit
(first commit)
compute md5 checksums on all files in path.  if md5file is specified, read
sums & paths from that file first.  when perusing path, if a file is found
that has a sum in md5file and has not changed since md5file was written, do
not generate a sum for it.
Merge branch 'master' of https://github.com/trjh/tidbits
more detail