Add note for NextJS users

Author: jamesrweb

README.md

@@ -5,6 +5,10 @@
 A component to integrate [P5.js](https://p5js.org/) sketches into
 [React](https://reactjs.org/) apps.
 
+## NextJS
+
+If you plan to use this component within a NextJS application, you should instead use [our NextJS dynamic implementation](https://github.com/P5-wrapper/next) instead.
+
 ## Demo & Examples
 
 ### Live demo