Add Readme and license

README.md

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+# Go Game Clock
+
+A simple Android application for timing Go (Baduk/Weiqi) games.
+
+## Features
+
+- Configurable game time settings
+- Player time tracking
+- Pause/resume functionality
+- Sound notifications
+
+## Installation
+
+1. Clone this repository
+2. Open in Android Studio
+3. Build and run on your Android device or emulator
+
+## Usage
+
+1. Set the initial time for each player
+2. Start the game
+3. Tap a player's side to switch turns and start their timer
+4. Use the pause button to pause the game
+
+## Development
+
+This project is built with:
+- Kotlin
+- Android Jetpack Components
+- Android Studio