update readme

Author: Kurtyjlee

README.md

@@ -1,8 +1,52 @@
 [![Review Assignment Due Date](https://classroom.github.com/assets/deadline-readme-button-22041afd0340ce965d47ae6ef1cefeee28c7c493a6346c4f15d667ab976d596c.svg)](https://classroom.github.com/a/bzPrOe11)
 # CS3219 Project (PeerPrep) - AY2425S1
-## Group: Gxx
+## Group: G11
 
-### Note: 
-- You can choose to develop individual microservices within separate folders within this repository **OR** use individual repositories (all public) for each microservice. 
-- In the latter scenario, you should enable sub-modules on this GitHub classroom repository to manage the development/deployment **AND** add your mentor to the individual repositories as a collaborator. 
-- The teaching team should be given access to the repositories as we may require viewing the history of the repository in case of any disputes or disagreements. 
+![PeerPrep](docs/images/collaboration.png)
+
+## Description
+PeerPrep is your go-to platform for collaborative learning and problem-solving. Connect with peers at your proficiency level to tackle curated questions, improve your skills, and collaborate seamlessly using our real-time audio chat and code editor. Find the perfect study partner, learn effectively, and level up your problem-solving with PeerPrep!
+
+Try out [PeerPrep](https://peerprep-mock-interview.duckdns.org) now!
+
+## Features
+1. Curated questions for every topic and proficiency level
+2. Real-time peer matching
+3. Persistent session recovery for accidental disconnects
+4. Live collaboration on code editor, with syntax highlighting supported
+5. Peer-to-peer audio chat support
+6. Secure authentication with OAuth support
+7. Multi-language code execution. (C++, Python and Java)
+
+## Architecture
+![Architecture](docs/images/architecture.png)
+
+### Tech stack
+- **Frontend**: Nextjs, TailwindCSS, Shadcn, Zustand, Socket.io
+- **Backend**: Node, Express, Redis
+- **Database**: MongoDB
+- **Cloud**: Kubernetes, Docker, GCP
+- **CI/CD**: Github Actions, Google Cloud Run
+- **Message Broker**: RabbitMQ
+- **Logging**: Google Cloud Logging
+- **Audio Chat**: WebRTC, Turn, Stun
+- **Secure Connection**: Google Certificate Manager, Nginx
+
+## Setup
+1. Clone the repository.
+2. Install the dependencies for all services
+```bash
+  pnpm install
+```
+3. Add the required environment variables in the `.env.*` files.
+4. Start the services.
+```bash
+  docker compose up --build
+```
+
+## Contributors
+- [Kurt](https://kurt-lee.me)
+- [Simba](https://www.yipsinhang.xyz/)
+- [Siyuan](https://leesiyuan.me/)
+- [Youwei](https://github.com/tyouwei)
+- [Zhen Dong](https://github.com/ZD292)