Update README.md #1137

	name: Formatting
	on: [push, pull_request]
	jobs:
	check-formatting:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v1
	- name: Black Code Formatter
	uses: lgeiger/black-action@master
	with:
	args: "--line-length 120 . --check"
	name: black-action

	auto-formatting:
	name: runner / black
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Check files using the black formatter
	uses: rickstaa/action-black@v1
	id: action_black
	with:
	black_args: "--line-length 120 ."
	# - name: Create Pull Request
	# if: steps.action_black.outputs.is_formatted == 'true'
	# uses: peter-evans/create-pull-request@v3
	# with:
	# token: ${{ secrets.GITHUB_TOKEN }}
	# title: "Format Python code with psf/black push"
	# commit-message: ":art: Format Python code with psf/black"
	# body: \|
	# There appear to be some python formatting errors in ${{ github.sha }}. This pull request
	# uses the [psf/black](https://github.com/psf/black) formatter to fix these issues.
	# base: ${{ github.head_ref }} # Creates pull request onto pull request or commit branch
	# branch: actions/black

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