Added usage instructions

Fixes #2

README.md

@@ -1,9 +1,60 @@
-## Prerequisite
+# 📞 Call Log Analyzer
 
-- You will need to export the call logs of your android device using this open source app: [SMS Import / Export](https://f-droid.org/packages/com.github.tmo1.sms_ie/)
-- Don't get confused by app name, although it mentions only SMS, it allows you to export `Call logs` as well.
+Welcome to **Call Log Analyzer**! This simple and intuitive web app lets you visualize your call logs in a beautiful chart format. Whether you want to explore your call data offline or test with a sample, we've got you covered! 🎉
 
-## Screenshots
+## 🚀 Features
+
+- **Interactive Visualizations**: Easily understand your call patterns with interactive charts.
+- **Privacy First**: Your data stays with you. No data is sent to any server.
+- **Offline Usage**: Run the app locally without internet access.
+- **Sample Data Included**: Try out the app with a dummy JSON file before using your own data.
+
+## 🔒 Privacy
+
+Your privacy is our priority. Here's how we ensure it:
+- **Local Processing**: All call log data is processed directly in your browser. No data is sent to a server.
+- **Open Source**: Review the code yourself to see how it works and ensure your data stays safe.
+
+## 🛠️ How to Use
+
+Export the call logs from your Android device using this open-source app: [SMS Import / Export](https://f-droid.org/packages/com.github.tmo1.sms_ie/). Don't be confused by the app name, although it mentions only SMS, it allows you to export `Call logs` as well. [Source Code](https://github.com/tmo1/sms-ie)
+
+OR
+
+Use the included [sample-calls-logs.json](./test-data/sample-calls-logs.json) file to see how the app works.
+
+### Option 1: Run Locally (Recommended)
+
+1. **Download the Project**
+   - Clone the repository or download the ZIP file.
+   ```bash
+   git clone https://github.com/guruor/analyze-call-logs.git
+   ```
+
+2. **Open `index.html`**
+   - Navigate to the project directory and open the `index.html` file in your browser.
+   - You can simply double-click the file, or open it from your browser's file menu.
+
+3. **Load the Sample Data**
+   - Click on the "Upload JSON" button in the app.
+
+### Option 2: Test with Sample Data
+
+1. **Visit the Hosted Instance**
+   - Check out the live demo at [Hosted Instance URL](https://guruor.github.io/analyze-call-logs/) 🌐
+
+2. **Load the Sample Data**
+   - Click on the "Upload JSON" button in the app.
+
+## 🖼️ Screenshots
 
 ![Screenshot1.png](./screenshots/Screenshot1.png)
 ![Screenshot2.png](./screenshots/Screenshot2.png)
+
+## 🌟 Contributing
+
+This project thrives on community contributions! Feel free to submit issues and pull requests. Let's make this tool even better together!
+
+---
+
+Give the app a try and visualize your call logs like never before! 🚀✨