Initial commit: RR3 APK Modification Tools

- Automated PowerShell script (RR3-Community-Mod.ps1)
- Complete modification guide (14,000 words)
- Quick reference summary (12,000 words)
- Network protocol analysis (13,000 words)
- One-command APK modification
- Built-in custom server support discovery

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

README.md

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+# RR3 APK Modification Tools
+
+![License: Educational](https://img.shields.io/badge/license-Educational-blue.svg)
+![Platform: Windows](https://img.shields.io/badge/platform-Windows-lightgrey.svg)
+![Language: PowerShell](https://img.shields.io/badge/language-PowerShell-blue.svg)
+
+## 🎮 Real Racing 3 - Community Server APK Modifier
+
+This repository contains tools to modify the Real Racing 3 APK to connect to **community-hosted servers** instead of EA's official servers. Perfect for game preservation, private servers, and offline play.
+
+## ⚡ Quick Start
+
+```powershell
+.\RR3-Community-Mod.ps1 -ServerUrl "http://your-server-ip:5000"
+```
+
+## 📦 What's Included
+
+- **RR3-Community-Mod.ps1** - Automated APK modification script
+- **APK_MODIFICATION_GUIDE.md** - Complete guide (14,000 words)
+- **APK_MODIFICATION_SUMMARY.md** - Quick reference (12,000 words)  
+- **NETWORK_COMMUNICATION_ANALYSIS.md** - Protocol docs (13,000 words)
+
+## 🔍 How It Works
+
+Real Racing 3 has **built-in support** for custom servers! Just change the configuration in `AndroidManifest.xml`:
+
+```xml
+<meta-data android:name="com.ea.nimble.configuration" android:value="custom" />
+<meta-data android:name="NimbleCustomizedSynergyServerEndpointUrl" android:value="http://your-server:5000" />
+```
+
+## 🌐 Need a Server?
+
+Check out **[rr3-server](https://github.com/ssfdre38/rr3-server)** - ASP.NET Core community server with web admin panel!
+
+---
+
+**Made for game preservation 🏎️**