Add LICENSE and enhance README with professional formatting, badges, and comprehensive documentation

Author: maxwell-hauser

LICENSE

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+MIT License
+
+Copyright (c) 2025 Maxwell Hauser
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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 # File Statistics Processor
 
-Simple Swing-based utility that reads a text file containing an integer count followed by that many integer values, echoes the values to an output file with 10 numbers per line, and appends statistics (minimum, maximum, total, average).
+![Java](https://img.shields.io/badge/Java-21-ED8B00?style=flat&logo=openjdk&logoColor=white)
+![Maven](https://img.shields.io/badge/Maven-3.9+-C71A36?style=flat&logo=apache-maven)
+![License](https://img.shields.io/badge/License-MIT-blue?style=flat)
+![Status](https://img.shields.io/badge/Status-Active-success?style=flat)
 
-- Input format: first integer = file size (count of following integers)
-- Output format: first line repeats file size, next lines = values (10 per line), followed by min, max, total, average (one per line)
-- UI: uses dialogs to choose input and output files; shows a summary when done
+A Swing-based Java utility that processes integer data files, reformats the output, and calculates comprehensive statistics including minimum, maximum, total, and average values.
 
-## Quick Start
+## ✨ Features
+
+- **File Processing**: Read and validate integer data files
+- **Formatted Output**: Write data with 10 numbers per line
+- **Statistical Analysis**: Calculate min, max, total, and average
+- **Input Validation**: Verify data count and format integrity
+- **GUI Interface**: User-friendly file selection dialogs
+- **Sample Data**: Includes multiple test files (10-700 integers)
+
+## 📁 Input Format
+
+- First integer: count of following integers
+- Subsequent integers: data values (space or newline separated)
+
+## 📄 Output Format
+
+- Line 1: File size (count)
+- Lines 2-n: Data values (10 per line)
+- Final lines: Statistics (one per line)
+  - Minimum value
+  - Maximum value
+  - Total sum
+  - Average (2 decimal places)
+
+## 🚀 Quick Start
+
+### Using Maven (Recommended)
 
 ```powershell
-Push-Location "g:\My Drive\GITHUB\java\java_file_statistics_processor_gh"
+# Build the project
+mvn clean package
+
+# Run the application
+java -jar target/file-statistics-processor-1.0.0.jar
+```
+
+### Without Maven
+
+```powershell
+# Compile
 javac FileStatisticsProcessor.java
+
+# Run
 java FileStatisticsProcessor
-Pop-Location
 ```
 
-## Sample Data
+## 📖 Usage
+
+1. Launch the application
+2. Select an input file (sample files available in `data/` directory)
+3. Choose output location and filename
+4. View processing summary dialog
+5. Check output file for formatted data and statistics
+
+## 📊 Sample Data
+
+The `data/` directory includes test files:
+- `Data - 10.txt` (10 integers)
+- `Data - 20.txt` (20 integers)
+- `Data - 50.txt` (50 integers)
+- `Data - 100.txt` (100 integers)
+- `Data - 200.txt` (200 integers)
+- `Data - 400.txt` (400 integers)
+- `Data - 600.txt` (600 integers)
+- `Data - 700.txt` (700 integers)
+
+## 📋 Requirements
+
+- **JDK 21** (Temurin recommended)
+- **Maven 3.9+**
+
+## 🏗️ Building from Source
+
+```powershell
+# Clone the repository
+git clone https://github.com/maxwell-hauser/java_file_statistics_processor.git
+cd java_file_statistics_processor
+
+# Build with Maven
+mvn clean install
+
+# Run tests
+mvn test
+```
+
+## 📄 License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+
+## 👤 Author
 
-Example files are in `data/`. Choose any of the `Data - *.txt` files as input. The output can be saved anywhere; if no extension is provided, `.txt` is appended automatically.
+**Maxwell Hauser**
 
-## Notes
+## 🤝 Contributing
 
-- The program validates the declared file size and reads exactly that many integers.
-- Non-integer tokens or insufficient values will show an error dialog.
-- Average is written with two decimal places.
+Contributions, issues, and feature requests are welcome! Feel free to check the [issues page](https://github.com/maxwell-hauser/java_file_statistics_processor/issues).