Replace default README and add license

README.md

@@ -1,11 +1,49 @@
-# Starter Chrome Extension
+# 🔄 Simple Sync
 
-A minimal Chrome extension starter (Manifest V3) with a popup, options page, content script and background service worker.
+A lightweight Chrome extension that syncs your browser data—starting with bookmarks—across multiple devices using a unique sync token.
 
-## How to run locally
+---
 
-1. Save the project files to a folder (e.g. `chrome-extension-starter`).
-2. Open Chrome and go to `chrome://extensions`.
-3. Toggle **Developer mode** on (top-right).
-4. Click **Load unpacked** and pick the extension folder.
-5. The extension should appear in the toolbar (pin it for convenience).
+## 🚀 Features
+
+- ✅ **Bookmark Syncing**: Automatically sync bookmarks between your Chrome browsers.
+- 🔐 **Token-Based Syncing**: Your data is linked to a unique **sync token**—share it with other devices to sync across them.
+- 🌐 **Cross-Device Support**: Use the same token on multiple devices to keep them in sync.
+- 🔄 **Real-Time Updates** *(Planned)*: Upcoming support for near-instant sync between devices.
+
+---
+
+## 📦 Installation
+
+1. Clone this repository or download the ZIP:
+    ```bash
+    git clone git@gitlab.com:gdulai/simple-sync.git
+    ```
+
+2. Open Chrome and navigate to `chrome://extensions`.
+
+3. Enable **Developer Mode** (top-right corner).
+
+4. Click **Load unpacked**, then select the project folder.
+
+---
+
+## 🛠 Usage
+
+1. After installing, click the extension icon in your Chrome toolbar.
+
+2. If this is your **first device**, generate a **new sync token**.
+
+3. On any **additional devices**, enter the existing sync token to sync with that dataset.
+
+4. The extension will automatically sync your bookmarks periodically.
+
+---
+
+## 🧪 Development
+
+Built with:
+
+- JavaScript (Vanilla)
+- Chrome Extensions API
+- Web Storage / Cloud Sync Backend (custom or Firebase, etc.)