doc: Update README.md

README.md

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+
 # Chess
 
-Fully Object-Oriented Chess in Java
+A Fully Object-Oriented Chess, written in pure Java
+
+
+## Features
+
+- Support Custom [FEN](https://en.wikipedia.org/wiki/Forsyth–Edwards_Notation)
+- Multiplayer
+- Undo Move
+- Plays sound
+- Support Stalement and Checkmate edge Cases
+- Support [En Passant](https://en.wikipedia.org/wiki/En_passant) Move
+
+
+## Demo
+
+![Demo](demo.gif)
+
+
+## Documentation
+You can visit the online Documentation on here: [Documentation](https://itsamirhn.github.io/Chess)
+
+
+## Run Locally
+
+1. Install JRE 21 or higher
+2. Download the latest `Chess-1.0-SNAPSHOT.jar` file from [releases page](https://github.com/itsamirhn/Chess/releases)
+3. Run the following command:
+```bash
+  java -jar Chess-1.0-SNAPSHOT.jar
+```
+
+## Running Tests
+
+The project use [Maven](https://maven.apache.org/) as build automation tool. To run tests, run the following command:
+
+```bash
+  mvn test
+```
+
+
+## Authors
+
+- [@itsamirhn](https://github.com/itsamirhn)
+