misc updates
* added SunOS to fstat switch with same params as Linux (Nex9)
* updated documentation for cipher selection (patademahesh)
* improved zfs list syntax (patademahesh)
update readme // add warning
readme fixup
small tweak to list logic
awk no longer needed ... force ascending sort (small s ... not big S)
multiple fixes and enhancements
* enable warning by default when trying to replicate root datasets
* strip trailing slashes from dataset names
* use printf for log messages as it's more consistent across platforms
* update readme warning about root datasets
move configuration to a separate file
comment fixups
cleanup printf formatting and groupings
add command logging to snapshots
oops...forgot a newline