Update README.md

Author: hreger

README.md

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-# secure-file-vault
+# 🔐 Secure File Vault System
+
 A secure desktop application to **encrypt and decrypt files**, built with **Java 20**, **JavaFX**, and **AES encryption**. It features a modern GUI, secure user authentication, and is extendable for cloud syncing and audit logging.
+
+---
+
+## 🚀 Features (Initial Version)
+
+- 🔒 **AES File Encryption/Decryption**  
+  Encrypt your files using AES-256 with password-based key derivation. Decryption is allowed only after successful login, ensuring strong protection against unauthorized access.
+
+- 👤 **User Authentication**  
+  Secure registration and login system with password hashing (PBKDF2). Session management maintains user context while ensuring safety.
+
+> 🛠️ _Planned features_:  
+> - Folder-tree view for exploring encrypted directories  
+> - Audit logs to monitor access and changes  
+> - AWS S3 cloud sync support
+
+---
+
+## 🧰 Tech Stack
+
+| Component   | Technology                     |
+|-------------|-------------------------------|
+| Language     | Java 20 (with preview features) |
+| GUI          | JavaFX 24                     |
+| Encryption   | Java Cryptography API (AES)   |
+| Database     | SQLite (MySQL supported)      |
+| Build Script | Custom `build.bat` script     |
+
+---
+
+## 🗂️ Project Structure
+
+SecureFileVault/ ├── src/ │ └── main/ │ ├── java/ │ │ └── com/freelancetracker/ │ │ ├── Main.java │ │ ├── controllers/ │ │ ├── models/ │ │ └── services/ │ └── resources/ ├── lib/ │ ├── javafx-sdk-24/ │ ├── sqlite-jdbc-3.49.1.0.jar │ └── pdfbox-3.0.4.jar ├── out/ │ └── (compiled output) ├── build.bat └── README.md
+
+
+---
+
+## 🏁 Getting Started
+
+### ✅ Prerequisites
+
+- Java 20 installed and `JAVA_HOME` configured correctly  
+- JavaFX SDK 24 ([Download](https://gluonhq.com/products/javafx/))  
+- SQLite JDBC Driver ([Download](https://github.com/xerial/sqlite-jdbc/releases))  
+- (Optional) Apache PDFBox ([Download](https://pdfbox.apache.org/download.html))
+
+### ▶️ Run the App
+
+To compile and run the application:
+
+```bash
+.\build.bat