258 remove strand groups #241

	name: "Docs Check"
	on: pull_request

	jobs:
	docs:
	runs-on: ubuntu-20.04
	container:
	image: unhumbleben/nupack:latest
	steps:
	- uses: actions/checkout@v2.3.4
	- name: Set up Python
	uses: actions/setup-python@v3
	with:
	python-version: '3.9'
	- name: Upgrade pip
	run: python -m pip install --upgrade pip
	- name: Install NUPACK
	run: \|
	python -m pip install -U nupack -f /nupack/package
	# got from here: https://github.com/marketplace/actions/python-dependency-installation
	# should install dependencies in requirements.txt
	- name: Install Python dependencies
	uses: py-actions/py-dependency-install@v2
	- name: Install Sphinx
	run: \|
	python -m pip install sphinx sphinx_rtd_theme
	- name: Move to docs folder and build
	run: \|
	cd doc
	pwd
	sphinx-build -T -E -W -b html . _build

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