docs: Update code block syntax and add important notice in README #30

	name: CI

	on:
	push:
	paths-ignore:
	- '**.md'
	pull_request:
	paths-ignore:
	- '**.md'

	jobs:
	test:
	runs-on: ubuntu-latest
	continue-on-error: ${{matrix.allow_failures}}

	strategy:
	fail-fast: false
	matrix:
	emacs_version:
	- 27.1
	- 27.2
	- 28.1
	- 28.2

	allow_failures: [false]

	include:
	- emacs_version: snapshot
	allow_failures: true

	steps:
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.10'
	architecture: x64

	- name: Set up Emacs
	uses: purcell/setup-emacs@master
	with:
	version: ${{matrix.emacs_version}}

	- name: Set up Cask
	uses: conao3/setup-cask@master
	with:
	version: 'snapshot'

	- name: Check out the source code
	uses: actions/checkout@v2

	- name: Install dependencies
	run: cask install

	- name: Byte compile
	run: make compile

	- name: Run tests
	run: make test

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