Allow to choose sed, add instructions for macOS #33

	name: CI
	on: [create, pull_request, push]
	jobs:
	CI:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	fetch-depth: 0 # Needed to make sure to proper git describe
	# This is a workaround for https://github.com/actions/checkout/issues/649
	- name: Fix fetched tag
	if: startsWith(github.ref, 'refs/tags/')
	run: /usr/bin/git -c protocol.version=2 fetch --prune --progress
	--no-recurse-submodules origin +"$GITHUB_REF:$GITHUB_REF"
	- name: Install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get -y install python3 python-docutils ruby-dev
	sudo gem install fpm
	- name: Build
	run: make PYTHON=python3 all deb
	- name: Archive package artifacts
	uses: actions/upload-artifact@v2
	with:
	name: deb
	path: deb/git-hub_*.deb
	if-no-files-found: error

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