Update README.md #155

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Python application

	on:
	push:
	branches: [ main, develop ]
	pull_request:
	branches: [ main, develop ]

	jobs:
	build:

	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python_version: [ 3.8, 3.9 ]
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python_version }}
	- name: Install system dependencies
	run: sudo apt-get install plzip tar gnupg2 build-essential
	- name: Install python dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pytest
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	# jdupes is an optional dependency in the precondition checks, need it here for testing
	- name: Install jdupes
	run: \|
	git clone https://github.com/jbruchon/jdupes.git
	cd jdupes
	git checkout v1.19.1
	make && sudo make install
	- name: Test with pytest
	run: \|
	pip install pytest
	pytest

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