Update README.md

README.md

@@ -1,2 +1,19 @@
-# MQTT-Joystick-Controller
-This repo is an open source project for an MQTT Joystick written in Java
+# MQTT Joystick Controller
+
+This is an Android Studio project that provides three Classes in order to deal with : Joystick and MQTT. Feel free to clone it and modify or just take some pieces of the code from it.
+
+## Installation
+Clone the repo:
+
+```bash
+git clone https://github.com/Vincenzo-Petrolo/MQTT-Joystick-Controller.git
+```
+
+## Usage
+Open your Android Studio installation and simply File>Open> and search the project where you cloned it.
+
+## Contributing
+Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
+
+## License
+[GPL v3.0](https://choosealicense.com/licenses/gpl-3.0/)