Update README.md #136

	name: Test
	on:
	push:
	branches:
	- main
	pull_request:
	types: [opened, synchronize, reopened]

	jobs:
	check:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	## Python
	- name: Install Python 3.6
	uses: actions/setup-python@v1
	with:
	python-version: "3.6"
	- name: Install Python formatter
	run: pip install black
	- name: Check Python formatting in flask-sqlalchemy backend
	run: black --check backends/flask-sqlalchemy
	- name: Check Python formatting in tests
	run: black --check tests

	## Ruby
	- name: Install Ruby + gems
	uses: ruby/setup-ruby@v1
	with:
	bundler-cache: true
	ruby-version: 2.7

	## Node
	- name: Use Node.js 12.20.0
	uses: actions/setup-node@v1
	with:
	node-version: 12.20.0

	# Run backend tests
	- name: Flask SQLAlchemy Tests
	working-directory: "tests"
	run: make test-flask-sqlalchemy
	- name: Rails Tests
	working-directory: "tests"
	run: make test-rails
	- name: express-typeorm Tests
	working-directory: "tests"
	run: make test-express-typeorm

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