feat: github action for demo.

Author: a-rudenko

README.md

@@ -21,6 +21,8 @@ This project is an interactive 3D visualization of technology icons (e.g., JavaS
 implemented with WebGL and Three.js. Particles representing different technologies move dynamically in a 3D space,
 connecting with each other based on customizable parameters.
 
+<a href="https://a-rudenko.github.io/webgl-tech-particles/demo.html" target="_blank">Live demo</a>
+
 <h2>Install</h2>
 
 Using npm:
@@ -86,6 +88,8 @@ You can also use this package directly in the browser via CDN without installing
 Example with basic <a href="https://github.com/a-rudenko/webgl-tech-particles/blob/main/settings.json" target="_blank">
 settings</a>.
 
+<i>You can also export settings from the <a href="https://a-rudenko.github.io/webgl-tech-particles/demo.html" target="_blank">demo</a> version.</i>
+
 Below is a description of the settings.
 
 <h3>Particle Settings:</h3>