message: Update Tink Python documentation to include install from PyPi package.
diff: @@ -5,13 +5,30 @@ This document presents instructions and Python code snippets for common tasks in
  ## Setup instructions
  -The Tink Python implementation is a wrapper around the C++ implementation using
  -[pybind11](https://github.com/pybind/pybind11). It is therefore necessary to
  -compile the project before the Python implementation is ready to use.
  +The simplest way is to install a binary release from
  +[PyPi](https://pypi.org/project/tink/):
  -### Build with Bazel
  +```shell
  +pip install tink
  +```
  +
  +Currently, this includes binary wheels for:
  +
  +* Linux: Python 3.7, Python 3.8
  +* MacOs: Python 3.7, Python 3.8
  -[Bazel](https://bazel.io) is used to build and test Tink.
  +## Building from source
  +
  +Tink currently supports two build systems for the use with Python:
  +
  +* [Bazel](https://bazel.build/)
  +* Setuptools to create a Python package
  +
  +Note that in both cases you will require [Bazel](https://bazel.build/), as it is
  +used to compile the wrapper around the C++ implementation which uses
  +[pybind11](https://github.com/pybind/pybind11).
  +
  +### Build with Bazel
  To build the Python implementation:
  