Update README.md

README.md

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+---
+title: Data Visualization App
+emoji: 📊
+colorFrom: blue
+colorTo: purple
+sdk: streamlit
+sdk_version: "1.38.0"
+app_file: app.py
+pinned: false
+---
+
 # 📊 Streamlit Data Visualization App
 
-A simple and interactive data visualization web app built with **Streamlit**.  
-Upload your CSV file and instantly generate visual insights.
+Upload your CSV file and instantly explore your data with beautiful visualizations.
 
 ## 🧩 Features
 - Upload CSV datasets
 - View data preview and summary
-- Choose visualization type (Line, Bar, Scatter, Histogram, Pie)
-- Interactive chart rendering
+- Choose chart type (Line, Bar, Scatter, Histogram, Pie)
+- Automatic matplotlib chart rendering
 
 ## 🚀 Run locally
 ```bash