Add icon and update README #176

	name: CI
	on:
	push:
	branches:
	- main
	paths-ignore:
	- 'guides/**'
	pull_request:
	paths-ignore:
	- 'guides/**'
	env:
	MIX_ENV: test

	jobs:
	code_quality_and_tests:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	include:
	- elixir: 1.15.0
	erlang: 24.0.0
	- elixir: 1.16.0
	erlang: 24.0.0
	- elixir: 1.17.0
	erlang: 27.0.0
	services:
	db:
	image: postgres:15
	ports: ["5432:5432"]
	env:
	POSTGRES_PASSWORD: postgres
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	name: Elixir v${{ matrix.elixir }}, Erlang v${{ matrix.erlang }}
	steps:
	- uses: actions/checkout@v4

	- name: Generate test configuration
	run: cp config/test.example.exs config/test.exs

	- uses: erlef/setup-beam@v1
	with:
	otp-version: ${{ matrix.erlang }}
	elixir-version: ${{ matrix.elixir }}

	- name: Retrieve Dependencies Cache
	uses: actions/cache@v4
	id: mix-cache
	with:
	path: \|
	deps
	_build
	key: ${{ runner.os }}-${{ matrix.erlang }}-${{ matrix.elixir }}-mix-${{ hashFiles('**/mix.lock') }}

	- name: Install Mix Dependencies
	run: mix deps.get

	- name: Check unused dependencies
	run: mix deps.unlock --check-unused

	- name: Compile dependencies
	run: mix deps.compile

	- name: Check format
	run: mix format --check-formatted

	- name: Check application compile warnings
	run: mix compile --force --warnings-as-errors

	- name: Check Credo warnings
	run: mix credo

	- name: Run Tests - SQLite3
	run: mix test
	env:
	DB: sqlite

	- name: Run Tests - PostgreSQL
	run: mix test
	env:
	DB: postgres

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