Update github action and README #90

	name: Run tests

	on:
	push:
	branches:
	- main
	- dev
	permissions:
	contents: read

	jobs:
	deploy:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python
	uses: actions/setup-python@v3
	with:
	python-version: '3.7'
	- name: Install packages
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	- name: Run tests
	env:
	VULUNSERVER_ADDR: "http://127.0.0.1:5000"
	run: \|
	cd tests
	python vulunserver.py 2>/dev/null &
	pip install coverage
	coverage run --source ../fenjing -m unittest test_* &&
	coverage xml -i
	# python -m unittest *.py
	- name: Upload coverage reports to Codecov
	uses: codecov/codecov-action@v3
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

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