Update the Readme and add a mention of the WordPress plugin

README.md

@@ -216,7 +216,7 @@ The prefetching provided by `quicklink` can be viewed as a [progressive enhancem
 
 * Without polyfills: Chrome, Firefox, Edge, Opera, Android Browser, Samsung Internet.
 * With [Intersection Observer polyfill](https://github.com/w3c/IntersectionObserver/tree/master/polyfill) ~6KB gzipped/minified: Safari, IE11
-* With the above and a [Set()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) and [Array.from](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from) polyfill: IE9 and IE10. [Core.js](https://github.com/zloirock/core-js) provides both `Set()` and `Array.from()` shims. Projects like [es6-shim](https://github.com/paulmillr/es6-shim/blob/master/README.md) are an alternative you can consider. 
+* With the above and a [Set()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) and [Array.from](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from) polyfill: IE9 and IE10. [Core.js](https://github.com/zloirock/core-js) provides both `Set()` and `Array.from()` shims. Projects like [es6-shim](https://github.com/paulmillr/es6-shim/blob/master/README.md) are an alternative you can consider.
 
 Certain features have layered support:
 
@@ -251,8 +251,8 @@ Please note: this is by no means an exhaustive benchmark of the pros and cons of
 
 * Using [Gatsby](https://gatsbyjs.org)? You already get most of this for free baked in. It uses `Intersection Observer` to prefetch all of the links that are in view and provided heavy inspiration for this project.
 * Want a more data-driven approach? See [Guess.js](https://guess-js.github.io). It uses analytics and machine-learning to prefetch resources based on how users navigate your site. It also has plugins for [Webpack](https://www.npmjs.com/package/guess-webpack) and [Gatsby](https://www.gatsbyjs.org/docs/optimize-prefetching-with-guessjs/).
+* WordPress users can now get quicklink as a [WordPress Plugin from the plugin repository](https://wordpress.org/plugins/quicklink/).
 
 ## License
 
 Licensed under the Apache-2.0 license.
-