Update main.yml #12

	on:
	push:
	branches: [ master ]

	jobs:
	nikola_build:

	name: 'Deploy Nikola to GitHub Pages'
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [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: Build and Deploy Nikola
	run: \|
	python -m pip install --upgrade pip
	pip install "Nikola[extras]"
	git fetch origin gh-pages
	cd site
	nikola build
	nikola github_deploy

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