updated design-principles vignette, closes #28 #3

	# Workflow derived from https://github.com/r-lib/actions/tree/master/examples
	# The action runs when:
	# - The DESCRIPTION or inst/CITATION are modified
	# - Can be run manually
	# For customizing the triggers, visit https://docs.github.com/en/actions/learn-github-actions/events-that-trigger-workflows
	on:
	push:
	branches:
	# This may seem like a no-op but it prevents triggering on tags.
	# We use '*' rather '' to accomodate names like 'dev/branch-1'
	- '**'
	paths:
	- DESCRIPTION
	- inst/CITATION
	- .github/workflows/update-citation-cff.yaml
	workflow_dispatch:

	name: Update CITATION.cff

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	permissions:
	contents: write

	jobs:
	update-citation-cff:
	runs-on: ubuntu-latest
	env:
	GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
	steps:
	- uses: actions/checkout@v3
	- uses: r-lib/actions/setup-r@v2
	- uses: r-lib/actions/setup-r-dependencies@v2
	with:
	extra-packages: \|
	any::cffr
	any::V8

	- name: Update CITATION.cff
	run: \|

	library(cffr)

	# Customize with your own code
	# See https://docs.ropensci.org/cffr/articles/cffr.html

	# Write your own keys
	mykeys <- list()

	# Create your CITATION.cff file
	cff_write(keys = mykeys)

	shell: Rscript {0}

	- name: Commit results
	run: \|
	git config --local user.email "action@github.com"
	git config --local user.name "GitHub Action"
	git add CITATION.cff
	git commit -m 'Update CITATION.cff' \|\| echo "No changes to commit"
	git pull --rebase origin ${{ github.ref.name }}
	git push origin \|\| echo "No changes to commit"

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