Add comment about importing Lexxy via javascript bundler

Author: davidalejandroaguilar

README.md

@@ -104,6 +104,8 @@ To apply syntax highlighting to rendered Action Text content, you need to call t
 ```javascript
 import { Controller } from "@hotwired/stimulus"
 import { highlightAll } from "lexxy"
+// Or if you installed via a javascript bundler:
+// import { highlightAll } from "@37signals/lexxy"
 
 export default class extends Controller {
   connect() {