Update README.md

Author: HackStyx

README.md

@@ -9,6 +9,7 @@
 [![MySQL](https://img.shields.io/badge/MySQL-4479A1?style=for-the-badge&logo=mysql&logoColor=white)](https://www.mysql.com/)
 [![TailwindCSS](https://img.shields.io/badge/Tailwind_CSS-38B2AC?style=for-the-badge&logo=tailwind-css&logoColor=white)](https://tailwindcss.com/)
 [![Node.js](https://img.shields.io/badge/Node.js-339933?style=for-the-badge&logo=nodedotjs&logoColor=white)](https://nodejs.org/)
+[![Finnhub](https://img.shields.io/badge/Finnhub-1B1B1B?style=for-the-badge&logo=data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNCIgaGVpZ2h0PSIyNCIgdmlld0JveD0iMCAwIDI0IDI0IiBmaWxsPSJub25lIiBzdHJva2U9IiNmZmZmZmYiIHN0cm9rZS13aWR0aD0iMiIgc3Ryb2tlLWxpbmVjYXA9InJvdW5kIiBzdHJva2UtbGluZWpvaW49InJvdW5kIj48cGF0aCBkPSJNMyA2aDJsMTUgMk0xNyA2djE0TTcgMTZoMTAiLz48L3N2Zz4=)](https://finnhub.io/)
 
 <p align="center">
   <strong>A modern, responsive stock portfolio tracker built with React and Node.js</strong>
@@ -28,8 +29,10 @@
 - 👀 **Watchlist** - Monitor potential investments
 - 🌓 **Dark/Light Mode** - Easy on the eyes, day and night
 - 📱 **Fully Responsive** - Perfect on desktop and mobile
-- 🔄 **Live Updates** - Stock prices update automatically
-- 📈 **Price History** - Visualize stock performance
+- 🔄 **Live Updates** - Real-time stock prices via Finnhub API
+- 📈 **Price History** - Visualize stock performance with historical data
+- 💹 **Market Data** - Real-time quotes and market status tracking
+- 🎯 **Price Targets** - Set and monitor stock price targets
 
 ## 🚀 Quick Start
 
@@ -38,6 +41,7 @@
 - Node.js 14+
 - npm or yarn
 - MySQL
+- Finnhub API Key (get one at [finnhub.io](https://finnhub.io/))
 
 ### Frontend Setup
 
@@ -71,6 +75,7 @@ npm install
 DATABASE_URL=mysql://user:password@localhost:3306/portfolio_tracker
 PORT=5000
 NODE_ENV=development
+FINNHUB_API_KEY=your_finnhub_api_key
 ```
 
 3. Run migrations and start:
@@ -121,6 +126,7 @@ DELETE  /api/watchlist/:id       # Remove from watchlist
 - **Framework**: [Express](https://expressjs.com/) - Web framework for Node.js
 - **Database**: [MySQL](https://www.mysql.com/) - Open-source relational database
 - **ORM**: [Sequelize](https://sequelize.org/) - Modern TypeScript and Node.js ORM
+- **Market Data**: [Finnhub](https://finnhub.io/) - Real-time RESTful APIs for stocks
 - **API Documentation**: OpenAPI/Swagger
 
 ### 🚀 DevOps & Infrastructure
@@ -147,11 +153,12 @@ DELETE  /api/watchlist/:id       # Remove from watchlist
 
 ## ⚠️ Limitations
 
-- Uses simulated stock data
+- Uses simulated stock data when Finnhub API rate limit is reached
 - Single-user environment
 - Price updates every minute
 - Best viewed in modern browsers
 - Backend spins down after 15 minutes of inactivity and needs time to restart
+- Limited to 60 API calls per minute (Finnhub free tier)
 
 ## 📄 License