docs: link to cdn

README.md

@@ -14,9 +14,11 @@ This is useful for Web Monetizing static sites (i.e. replacing advertising). For
 ### Including the Script
 
 ```html
-<script src="https://interledgerjs.github.io/web-monetization-scripts/dist/donate.js"></script>
+<script src="https://cdn.coil.com/donate.js"></script>
 ```
 
+The script also exists at `https://interledgerjs.github.io/web-monetization-scripts/dist/donate.js`, or can be built locally and served from your site.
+
 ### Usage
 
 Example of usage at [`examples/donate.html`](https://github.com/interledgerjs/web-monetization-scripts/blob/master/examples/donate.html), source code at [`src/donate.js`](https://github.com/interledgerjs/web-monetization-scripts/blob/master/src/donate.js).