switched heartbeat type.  changed to relative time vs absolute time for heartbeat responses.
added forcenew tag to force obtaining a new token
fixed some error messages.
improved documentation
changed cli name in readme
modified help text for downstream significantly
pep8 fix.
fixed test for state path
Merge pull request #8 from wiggzz/devel

Renamed SwPriv to Swizzle.  Added relative time bug fix.  Improved CLI interface significantly.