update README

Author: davideagostini

README.md

@@ -1,8 +1,13 @@
-<p align="center">
-  <img src="app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp" alt="QuickStack Logo" width="120" height="120">
-</p>
-
-# QuickStack
+<div id="user-content-toc">
+  <ul style="list-style: none;">
+    <summary>
+      <img src="app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp" alt="QuickStack Logo" width="120" height="120"><h1>QuickStack</h1>
+      <p>
+      <a href="https://opensource.org/licenses/Apache-2.0"><img src="https://img.shields.io/badge/License-Apache%202.0-blue.svg" alt="License"></a>
+      <a href="https://kotlinlang.org"><img src="https://img.shields.io/badge/Kotlin-2.2.0%2B-blue" alt="Kotlin"></a>
+    </summary>
+  </ul>
+</div>
 
 QuickStack is an Android fast-capture app built around the Quick Settings Tile.