Add gif image to README for visual representation of the results

Author: nikoscham

README.md

@@ -6,6 +6,8 @@
 
 [FEAScript](https://feascript.com/) is a lightweight finite element simulation library written in JavaScript. It empowers users to perform simulations for physics and engineering applications in both browser-based and server-side environments. This is the core library of the FEAScript project.
 
+<img src="https://feascript.github.io/FEAScript-website/assets/cold-plate-logo-results-and-mesh.gif" width="300" alt="Results of heat conduction around the FEAScript logo"> <br/>
+
 > 🚧 **FEAScript is currently under heavy development.** Its functionality and interfaces may change rapidly as new features and enhancements are introduced.
 
 ## Contents