Clean up read-me file. #8

	name: abjad-ext-ipython

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

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.6, 3.7, 3.8, 3.9]

	steps:
	- uses: actions/checkout@v2

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	- name: Intall apt add-ons
	run: \|
	sudo apt-get install freepats
	sudo apt-get install ghostscript
	sudo apt-get install graphviz
	sudo apt-get install imagemagick
	sudo apt-get install timidity

	- name: Install LilyPond
	run: \|
	lilypond_url=http://lilypond.org/download/binaries/linux-64/
	lilypond_source=lilypond-2.23.0-1.linux-64.sh
	wget -q -O /tmp/lilypond $lilypond_url/$lilypond_source
	sh /tmp/lilypond --batch

	- name: Upgrade pip
	run: \|
	python -m pip install --upgrade pip

	- name: Install Abjad
	run: \|
	git clone https://github.com/Abjad/abjad.git /tmp/abjad
	pip install /tmp/abjad

	- name: Install this package
	run: \|
	python -m pip install -e .

	- name: Log versions
	run: \|
	# lilypond is installed in /home/runner/bin
	export PATH=/home/runner/bin:${PATH}
	black --version
	flake8 --version
	isort --version
	mypy --version
	pip --version
	pytest --version
	lilypond --version

	- name: Run checks and tests
	run: \|
	# lilypond is installed in /home/runner/bin
	export PATH=/home/runner/bin:${PATH}
	export MYPYPATH=$MYPYPATH:/tmp/abjad
	echo $MYPYPATH
	make black-check
	make flake8
	make isort-check
	make mypy
	make jupyter-test

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