chore: Add Publish & Install badge to README

README.md

@@ -3,6 +3,7 @@
 A headless [GraphQL](https://graphql.org/) ecommerce framework built on [Node.js](https://nodejs.org) with [Nest](https://nestjs.com/) & [TypeScript](http://www.typescriptlang.org/), with a focus on developer productivity and ease of customization.
 
 [![Build Status](https://github.com/vendure-ecommerce/vendure/workflows/Build%20&%20Test/badge.svg)](https://github.com/vendure-ecommerce/vendure/actions) 
+![Publish & Install](https://github.com/vendure-ecommerce/vendure/workflows/Publish%20&%20Install/badge.svg)
 [![lerna](https://img.shields.io/badge/maintained%20with-lerna-cc00ff.svg)](https://lernajs.io/)
 
 ### [www.vendure.io](https://www.vendure.io/)