README.md: add command-line usage instructions #13

	# This is a basic workflow to help you get started with Actions

	name: CI

	# Controls when the action will run.
	on:
	# Triggers the workflow on push or pull request events but only for the master branch
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v4

	# Runs a set of commands using the runners shell
	- name: Update index.html and push to repo
	run: \|
	git config --local user.email "$(git log --format='%ae' HEAD^!)"
	git config --local user.name "$(git log --format='%an' HEAD^!)"
	git remote add github "https://$GITHUB_ACTOR:[email protected]/$GITHUB_REPOSITORY.git"
	git pull github ${GITHUB_REF} --ff-only
	python3 ./encodings.py --table html >index.html
	git commit -m "Committed from Github Actions" index.html
	git push github HEAD:${GITHUB_REF}

Provide feedback