Create user error

[satterly]

(alertaclient) macbook:python-alerta-client nsatterl$ alerta user --name me --email me@home.com --password me
Traceback (most recent call last):
  File "/Users/nsatterl/.virtualenvs/alertaclient/bin/alerta", line 11, in <module>
    load_entry_point('alerta', 'console_scripts', 'alerta')()
  File "/Users/nsatterl/.virtualenvs/alertaclient/lib/python3.6/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/Users/nsatterl/.virtualenvs/alertaclient/lib/python3.6/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/Users/nsatterl/.virtualenvs/alertaclient/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/nsatterl/.virtualenvs/alertaclient/lib/python3.6/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/nsatterl/.virtualenvs/alertaclient/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/Users/nsatterl/.virtualenvs/alertaclient/lib/python3.6/site-packages/click/decorators.py", line 27, in new_func
    return f(get_current_context().obj, *args, **kwargs)
  File "/Users/nsatterl/Projects/python-alerta-client/alertaclient/commands/cmd_user.py", line 56, in cli
    raise AuthError
TypeError: __init__() missing 1 required positional argument: 'message'