[OptaWeb Employee Rostering] Example in help in provishion.sh script is not valid

Running the example from provision.sh --help failed because it is not valid command

$ ./provision.sh setup --maven-mirror-url http://nexus.repo.com/content/groups/public/ --project-suffix s40d
ERROR: Invalid app name: "--maven-mirror-url".

The correct form is ./provision.sh [command] [app-name] [options]
Please, update the example command in provision.sh --help.

Also in example is used an option --maven-mirror-url, which is not described in OPTIONS in provision.sh --help. If this option can be used, please add it into the OPTIONS.