update CONTRIBUTING.md and README.md for new users #65

	---
	name: CI

	on:
	push:
	branches: master
	pull_request:

	jobs:
	test:
	env:
	LC_ALL: C
	runs-on: ${{ matrix.os }}
	continue-on-error: ${{ matrix.experimental }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	python: ["3.7", "3.8", "3.9", "3.10",]
	experimental: [false]
	include:
	- os: ubuntu-latest
	python: "3.11.0-alpha.4"
	experimental: true

	steps:
	- uses: actions/checkout@v2

	- name: Cache dependencies
	uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: pip-${{ matrix.os }}-${{ matrix.python }}-${{ hashFiles('/requirements.txt') }}
	restore-keys: \|
	pip-

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python }}

	- name: Install dependencies
	run: \|
	# python3 -m venv venv
	# . venv/bin/activate
	pip install -U setuptools pip wheel
	pip install -r requirements-dev.txt
	pip install -e .

	- name: Run linters
	run: make lint

	- name: Run tests
	run: \|
	pytest --cov autocrop -v --cov-report term-missing
	codecov

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