added readme

README.md

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+# promstats
+
+> 📊 Access Prometheus + Node Exporter hardware metrics through simple JavaScript functions.
+
+`promstats` is a lightweight Node.js package that fetches and parses hardware and system metrics (like CPU and system info) from a Prometheus server running with Node Exporter. It wraps raw metrics into clean JS functions so you can integrate them into your apps with ease.
+
+---
+
+## ✨ Features
+
+- 🔧 Fetches real-time metrics from Prometheus
+- 📦 Simple API for accessing CPU and system-level data
+- 🧠 Intelligent parsing of Node Exporter metrics
+- ⚡ Written in TypeScript
+
+---
+
+## 🚀 Installation
+```bash
+npm install promstats
+```