update README file #1

	name: Publish to GitHub Pages

	on:
	push:
	branches:
	- main

	jobs:
	deploy:
	runs-on: ubuntu-latest
	permissions:
	actions: read
	contents: write
	pages: write
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Install mdBook
	run: \|
	mkdir mdbook
	curl -sSL https://github.com/rust-lang/mdBook/releases/download/v0.4.23/mdbook-v0.4.23-x86_64-unknown-linux-gnu.tar.gz \| tar -xz --directory=./mdbook
	echo `pwd`/mdbook >> $GITHUB_PATH
	- name: Build
	run: mdbook build
	- name: Deploy to GitHub Pages
	run: \|
	git worktree add gh-pages gh-pages
	git config user.name "github-actions[bot]"
	git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
	cd gh-pages
	rm -rf latest
	mkdir latest
	mv ../book/* ./latest
	git add .
	if ! git diff --cached --exit-code > /dev/null; then
	git commit -m "Render mdBook for $GITHUB_SHA"
	git push
	fi

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