root/pypi: links for add-watermark

root/pypi add_watermark-0.1.1.tar.gz
root/pypi add_watermark-0.1.1-py3-none-any.whl
root/pypi add_watermark-0.1.0.tar.gz
root/pypi add_watermark-0.1.0-py3-none-any.whl