Update installation instructions #236

	name: update the gh-pages branch

	on:
	workflow_dispatch: # Allows you to run this workflow manually from the Actions tab
	push:
	branches: [main]
	pull_request:
	branches: [main]


	jobs:
	build-doc:
	runs-on: ubuntu-latest # Easy to use GitHub hosted runner, self hosted runner would require manual configurations
	steps:
	- uses: actions/checkout@v2 # Checks out your repository under $GITHUB_WORKSPACE, so your job can access it
	- name: Build Sphinx documentation
	uses: ammaraskar/sphinx-action@master
	with:
	docs-folder: "docs/"
	# Publish built docs to gh-pages branch.
	# ===============================
	- name: Commit documentation changes
	run: \|
	git clone https://github.com/Aalto-Electric-Drives/motulator.git --branch gh-pages --single-branch gh-pages
	cp -r docs/build/html/* gh-pages/docs
	cd gh-pages
	touch docs/.nojekyll
	git config --local user.email "action@github.com"
	git config --local user.name "GitHub Action"
	git add .
	git commit -m "Update documentation" -a \|\| true
	# The above command will fail if no changes were present, so we ignore
	# that.
	- name: Push changes
	uses: ad-m/github-push-action@master
	with:
	branch: gh-pages
	directory: gh-pages
	github_token: ${{ secrets.GITHUB_TOKEN }}
	# ===============================

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