def update(data_dir):
    """Update NLPIR license."""
    try:
        license_updated = update_license_file(data_dir)
    except URLError:
        click.secho('Error: unable to fetch newest license.', fg='red')
        exit(1)
    except (IOError, OSError):
        click.secho('Error: unable to move license to data directory.',
                    fg='red')
        exit(1)

    if license_updated:
        click.echo('License updated.')
    else:
        click.echo('Your license is already up-to-date.')
Update NLPIR license.