Added Table of Contents to README

Author: Vahid1919

README.md

@@ -14,9 +14,19 @@
 ObjectBox is embedded into your Android, Linux, macOS, or Windows app.
 
 **Latest version: [3.2.1 (2022/07/05)](https://docs.objectbox.io/#objectbox-changelog)**
-
 ❤ **Your opinion matters to us!** Please fill in this 2-minute [Anonymous Feedback Form](https://forms.gle/bdktGBUmL4m48ruj7).
 
+## Table of Contents
+- [Why use ObjectBox](#why-use-objectbox)
+  - [Features](#features)
+- [Gradle setup](#gradle-setup)
+- [First steps](#first-steps)
+- [Already using ObjectBox?](#already-using-objectbox)
+- [Other languages/bindings](#other-languagesbindings)
+- [License](#license)
+
+---
+
 Demo code using ObjectBox:
 
 ```kotlin
@@ -37,6 +47,8 @@ box.put(playlist);
 
 🧾 **Want details?** [Read the docs](https://docs.objectbox.io/)
 
+
+
 ## Why use ObjectBox
 
 ObjectBox NoSQL Java database is built for storing data locally on mobile devices. It is optimized for high efficiency on restricted devices and uses minimal CPU and RAM. Being fully ACID-compliant, ObjectBox is faster than any alternative, outperforming SQLite and Realm across all CRUD (Create, Read, Update, Delete) operations. Check out our [Performance Benchmarking App repository](https://github.com/objectbox/objectbox-performance).