update README #39

	name: docs

	on: ["push", "pull_request"]

	jobs:
	docs:
	# We want to run on external PRs, but not on our own internal PRs as they'll be run
	# by the push to the branch.
	if: github.event_name == 'push' \|\| github.event.pull_request.head.repo.full_name != github.repository

	runs-on: ubuntu-latest
	steps:
	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.x'
	architecture: 'x64'

	- name: Checkout
	uses: actions/checkout@v3

	- name: Build
	shell: bash
	run: \|
	pip install -r requirements.txt
	make cython
	pip install .

	- name: Sphinx Documentation Generator
	run: \|
	pip install tox
	tox -e sphinx

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