Swarm API URL not provided.

reviews.php: -s <Swarm URL> -u <API userid> -p <API user's password> \
  -r <reviewer userid to report on> -h

-s|--swarm     Swarm's URL (e.g. https://user@password:myswarm.url/)
-r|--reviewer  The reviewer to report on.
-h|--help      This help text.
-v|--verbose   Verbose output.

This script queries the Swarm API and reports on reviews that the
specified user needs to attend to.

Note: If your Helix Versioning Engine (p4d) has security level 3 set, you
cannot use a password to authenticate; you must acquire a host-unlocked
ticket from p4d, and use the ticket in place of a password when
communicating with the Swarm API connected to p4d.