Add note about htmx/hotwire

Author: josbeir

README.md

@@ -319,7 +319,10 @@ Publisher::publish($update);
 
 #### Publishing Rendered Views
 
-Use the `ViewUpdate` class to automatically render CakePHP views or elements and publish the rendered HTML:
+Use the `ViewUpdate` class to automatically render CakePHP views or elements and publish the rendered HTML.
+
+> [!NOTE]
+> This is especially handy when using JavaScript frameworks like [htmx](https://htmx.org/) (for instance, using the [htmx-sse extension](https://htmx.org/extensions/sse/)), [Hotwire](https://hotwired.dev/) (with [Turbo Streams](https://turbo.hotwired.dev/handbook/streams)), or similar reactive libraries, which can consume and swap HTML fragments received over Mercure for seamless real-time UI updates.
 
 ```php
 use Mercure\Publisher;