added read me file

Author: chandankumarm55

README.md

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+# Real-Time Polling System
+
+A real-time polling and chat application where a teacher can create live questions and students can answer instantly.  
+Built using **Node.js, Express, Socket.IO, MongoDB** on the backend and **React, Tailwind CSS** on the frontend.
+
+---
+
+## 🔗 Live Links
+
+- **Frontend:** https://real-time-polling-system-frontend.vercel.app/
+- **Backend:** https://real-time-polling-system-1.onrender.com/
+
+---
+
+## 🚀 Features
+
+- Real-time polling using Socket.IO
+- Live results update for teacher and students
+- Automatic timeout handling (unanswered students are treated as answered)
+- Teacher cannot create next question until current one finishes
+- Real-time chat between teacher and students
+- Students only see live questions (no old questions)
+- Teacher disconnect automatically ends the current question
+
+---
+
+## 🖥️ Run Locally
+
+### 1️⃣ Clone the repository
+
+```bash
+git clone https://github.com/chandankumarm55/Real-Time-Polling-System.git
+cd Real-Time-Polling-System
+```
+
+### 2️⃣ Backend Setup
+
+Create a `.env` file inside the `server` folder:
+
+```env
+PORT=5000
+NODE_ENV=development
+MONGODB_URI=mongodb+srv://chandan:chandan228@cluster0.tvto3to.mongodb.net/
+```
+
+Install dependencies and start server:
+
+```bash
+cd server
+npm install
+npm run dev
+```
+
+Backend will run at:
+
+```
+http://localhost:5000
+```
+
+### 3️⃣ Frontend Setup
+
+Create a `.env` file inside the `client` folder:
+
+```env
+VITE_SOCKET_URL=http://localhost:5000
+VITE_API_URL=http://localhost:5000/api
+```
+
+Install dependencies and start frontend:
+
+```bash
+cd client
+npm install
+npm run dev
+```
+
+Frontend will run at:
+
+```
+http://localhost:5173
+```
+
+---
+
+
+## 👨‍💻 Author
+
+**Chandan Kumar**  
+GitHub: [chandankumarm55](https://github.com/chandankumarm55)
+
+---
+
+## ⭐ Support
+
+If you like this project, feel free to star the repository ⭐