Add a contributing guide along with updates to README #5

	name: CI

	on:
	push:
	branches:
	- master
	# We only run tests when we open PRs (and not for ex: on every commit)
	# to avoid running workflows too frequently and incurring costs
	pull_request:

	permissions:
	contents: read

	jobs:
	ci:
	name: ci
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version-file: go.mod

	- name: Build
	run: go build -v ./...

	- name: Lint
	uses: golangci/golangci-lint-action@v4
	with:
	version: v1.54.2
	args: --timeout=3m

	- name: Test
	uses: robherley/go-test-action@v0

Provide feedback