Link to web demo

Author: emilk

README.md

@@ -12,6 +12,8 @@ Immediate mode plotting for [`egui`](https://github.com/emilk/egui).
 
 ![egui_plot_white](https://github.com/user-attachments/assets/b29acf5e-ccbf-4cb7-b03b-7e258fa5db16)
 
+[Try the web demo](https://emilk.github.io/egui_plot/)
+
 ### Testing
 * Locally: `cargo run -p demo`
 * Web: `(cd demo && trunk serve)`