Return the command line header

    :param parser:
    :param usage_message:
    :param usage:
    :return: The command header

def get_command_header(parser, usage_message="", usage=False):
    """ Return the command line header

    :param parser:
    :param usage_message:
    :param usage:
    :return: The command header
    """
    loader = template.Loader(os.path.join(
        firenado.conf.ROOT, 'management', 'templates', 'help'))
    return loader.load("header.txt").generate(
        parser=parser, usage_message=usage_message, usage=usage,
        firenado_version=".".join(map(str, firenado.__version__))).decode(
        sys.stdout.encoding)