update markdown

Author: Daniel15568

README.md

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-# percentify
+# 📊 Percentify  
+
+**Percentify** — because fractions are overrated 😎  
+A ridiculously tiny Python library for turning *"part of a whole"* into neat percentages without the brain math.  
+
+---
+
+## ✨ Features
+- ✅ Calculate the percentage of any two numbers  
+- ✅ Safe divide (returns `0.0` if the denominator is zero — no more crashes 🎉)  
+- ✅ Control the number of decimal places  
+- ✅ Zero dependencies, ultra-lightweight  
+
+---
+
+## 📦 Installation
+
+```bash
+pip install percentify