cleanup and README updates #6

	# This workflow uses actions that are not certified by GitHub.
	# They are provided by a third-party and are governed by
	# separate terms of service, privacy policy, and support
	# documentation.
	# This workflow will download a prebuilt Ruby version, install dependencies and run tests with Rake
	# For more information see: https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby

	name: CI

	on: [push, pull_request]

	permissions:
	contents: read

	jobs:
	test:
	name: test (ruby ${{ matrix.ruby }} / rails ${{ matrix.rails_version }})
	runs-on: ubuntu-latest
	strategy:
	matrix:
	ruby-version: ["3.3"]
	rails_version: ["7.0.8.4", "7.1.3.4", "7.2.1.2"]
	include:
	- ruby-version: "3.1"
	rails_version: "6.1.7.8"
	env:
	ENGINE_CART_RAILS_OPTIONS: "--skip-git --skip-listen --skip-spring --skip-keeps --skip-coffee --skip-test"
	steps:
	- uses: actions/checkout@v4
	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby-version }}
	bundler: "latest"
	- name: Install dependencies
	run: bundle install
	- name: Run linter and tests
	run: bundle exec rake ci

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