message: + npm badge to README
  Might help with [double checking versions](https://github.com/cloudflare/wrangler/issues/1119), SEO, etc.
  Does take a bit for 1st load.
diff: ![Banner](/banner.png)
  [![crates.io](https://meritbadge.herokuapp.com/wrangler)](https://crates.io/crates/wrangler) &nbsp;
  +[![npm](https://badge.fury.io/js/%40cloudflare%2Fwrangler.svg)](https://www.npmjs.com/package/@cloudflare/wrangler) &nbsp;
  [![Build Status](https://dev.azure.com/ashleygwilliams/wrangler/_apis/build/status/cloudflare.wrangler?branchName=master)](https://dev.azure.com/ashleygwilliams/wrangler/_build/latest?definitionId=1&branchName=master)
  [![Github Actions - Test Status](https://github.com/cloudflare/wrangler/workflows/Tests/badge.svg)](https://github.com/cloudflare/wrangler/actions)
  [![Github Actions - Build Status](https://github.com/cloudflare/wrangler/workflows/Builds/badge.svg)](https://github.com/cloudflare/wrangler/actions)
  