README: Add paragraph on motivation #9

	on:
	push:
	branches:
	- main
	- 'docs/**'

	jobs:
	publish-docs:
	name: Publish docs
	runs-on: ubuntu-20.04

	strategy:
	matrix:
	elixir: [1.13.4]
	otp: [24.1.7]

	steps:
	- uses: actions/checkout@v2

	- name: Setup Erlang & Elixir
	uses: erlef/setup-beam@v1
	with:
	elixir-version: ${{ matrix.elixir }}
	otp-version: ${{ matrix.otp }}

	# Caching
	- name: Dependencies cache
	uses: actions/cache@v1
	with:
	path: deps
	key: ${{ runner.os }}-deps-${{ hashFiles('mix.lock') }}
	restore-keys: \|
	${{ runner.os }}-deps-${{ hashFiles('mix.lock') }}

	- name: Build cache
	uses: actions/cache@v1
	with:
	path: _build
	key: ${{ runner.os }}-build-dev-${{matrix.elixir}}-${{matrix.otp}}-${{ hashFiles('mix.lock') }}
	restore-keys: \|
	${{ runner.os }}-build-dev-${{matrix.elixir}}-${{matrix.otp}}-

	# Setup
	- name: Install dependencies
	run: mix deps.get

	# Run
	- name: Generate docs
	run: mix docs

	- name: Push docs
	uses: JamesIves/[email protected]
	with:
	branch: gh-pages
	folder: doc

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