Update README.md #65

	name: Build documentation

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.9

	- name: Install doc dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .[doc]
	pip install -e .[extras]
	pip install pymatreader

	- name: Build documentation
	run: \|
	cd docs
	make html

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