Add usage info to README.rst #292

	# This file is managed by 'repo_helper'. Don't edit it directly.
	---
	name: Flake8

	on:
	push:
	pull_request:
	branches: ["master"]

	jobs:
	Run:
	name: "Flake8"
	runs-on: "ubuntu-18.04"

	steps:
	- name: Checkout 🛎️
	uses: "actions/checkout@v2"

	- name: Setup Python 🐍
	uses: "actions/setup-python@v2"
	with:
	python-version: "3.8"

	- name: Install dependencies 🔧
	run: \|
	python -VV
	python -m site
	python -m pip install --upgrade pip setuptools wheel
	python -m pip install flake8-prettycount
	python -m pip install .

	- name: "Run Flake8"
	run: "python -m flake8_prettycount flake8_github_action --format github"

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