README refers to wrong address

[fruffers]

pip install wheels/slamtec_aurora_python_sdk_linux_x86_64-2.0.0a0-py3-none-any.whl
should be
pip install wheels/slamtec_aurora_python_sdk_linux_x86_64-2.1.0-py3-none-any.whl
and so forth for every hardware architecture configuration.