added unit test example / lesson #2

	name: Python package

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.8]

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest
	if [ -f Sources/requirements.txt ]; then pip install -r Sources/requirements.txt; fi
	# - name: Lint with flake8
	# run: \|
	# stop the build if there are Python syntax errors or undefined names
	# flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	# flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	#- name: Test with pytest
	# run: \|
	# pytest
	- name: Build static site
	run: \|
	cd ./Sources; make html

	- name: Deploy
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./Sources/build/html

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