Add bonus tip to README.md #32

	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 ."

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