switch to pnpm and update readme/intro #680

	# .github/workflows/chromatic.yml

	# Workflow name
	name: 'Chromatic'

	# Event for the workflow
	on: push

	# List of jobs
	jobs:
	chromatic-deployment:
	# Operating System
	runs-on: ubuntu-latest
	# Job steps
	steps:
	- uses: actions/checkout@v1

	- uses: pnpm/action-setup@v2
	name: Install pnpm
	with:
	version: 9
	run_install: false
	- name: Get pnpm store directory
	shell: bash
	run: \|
	echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
	- uses: actions/cache@v3
	name: Setup pnpm cache
	with:
	path: ${{ env.STORE_PATH }}
	key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
	restore-keys: \|
	${{ runner.os }}-pnpm-store-
	- name: Install dependencies
	run: pnpm install

	- name: Publish to Chromatic
	uses: chromaui/action@v1
	# Chromatic GitHub Action options
	with:
	# 👇 Chromatic projectToken, refer to the manage page to obtain it.
	projectToken: ${{ secrets.CHROMATIC_PROJECT_TOKEN }}

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