Add gh-pages workflow #14

	name: Documentation

	on: [push, pull_request]

	jobs:
	build_and_deploy:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout the repository
	uses: actions/checkout@v2

	- name: Setup Node.js
	uses: actions/setup-node@v2

	- name: Retrieve the cached "node_modules" directory (if present)
	uses: actions/cache@v2
	id: node-cache
	with:
	path: node_modules
	key: node-modules-${{ runner.os }}-${{ hashFiles('package-lock.json') }}

	- name: Install dependencies (if the cached directory was not found)
	if: steps.node-cache.outputs.cache-hit != 'true'
	run: npm ci

	- name: Create the docs directory locally in CI
	run: npm run doc:full

	- name: Deploy 🚀
	uses: JamesIves/[email protected]
	with:
	branch: gh-pages
	folder: doc/html

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