First batch of changes.  More of a saving commit...
More gradual changes.  Got arg verification in place.
Added snapshot support, and tests.  Fixed a few typos and other nits along the way.
Add --show-repositories and --show-snapshots.  Lots of documentation added.  Version bump to 1.1.0-dev
Fixed terminology for disabling compression
Normalize the command-line help for the --require option
Updated documentation.  Re-ordered create & delete operations for snapshots & repositories to allow them to be deleted and recreated in one shot (if needed).
Merge remote-tracking branch 'untergeek/do-snapshots-2' into week_of_year

Conflicts:
	CONTRIBUTORS
	README.md
	curator/curator.py