Setup the argument parser.

            `parser`
                ``FocusArgParser`` object.

def setup_parser(self, parser):
        """ Setup the argument parser.

            `parser`
                ``FocusArgParser`` object.
            """

        parser.add_argument('task_name', help='task to create')
        parser.add_argument('clone_task', nargs='?',
                            help='existing task to clone')
        parser.add_argument('--skip-edit', action='store_true',
                            help='skip editing of task configuration')