Update README.md

Now it has a preview for the client in the readme

Author: N1xUser

README.md

@@ -1,5 +1,18 @@
 # OpenAI-HTML-Client
 This is a simple, local-only interface for interacting with the OpenAI API. It's a single HTML file that you can run directly in your web browser, I did this because I was given a key to interact with the OpenAI API at university, but sometimes I just want to use ChatGPT Premium's features in a simple web interface. Feel free to contribute.
+<div align="center">
+  <table border="0">
+    <tr>
+      <td>
+        <img src="https://github.com/user-attachments/assets/32c9dff8-2c59-4ade-b406-79fa1219e4d7" alt="Desktop View" height="400">
+      </td>
+      <td>
+        <img src="https://github.com/user-attachments/assets/1e04dd13-dbb6-4f9a-9c80-901d63e5cc8f" alt="Mobile View" height="400">
+      </td>
+    </tr>
+  </table>
+</div>
+    
 
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