Added BluetoothCommunicatorExample to Communication systems / Custom communication systems

README.md

@@ -247,6 +247,7 @@ _See https://en.wikipedia.org/wiki/Comparison_of_CalDAV_and_CardDAV_implementati
 
 ### Custom communication systems
 
+- [BluetoothCommunicatorExample](https://github.com/niedev/BluetoothCommunicatorExample) - Bluetooth LE chat app to communicate between android devices with P2P architecture. ([Clients](https://github.com/niedev/RTranslator)) `Apache-2.0` `Java`
 - [Centrifugo](https://github.com/centrifugal/centrifugo) - Language-agnostic real-time messaging (Websocket or SockJS) server. ([Demo](https://github.com/centrifugal/centrifugo#demo)) `MIT` `Go`
 - [Cherry](https://github.com/rafael-santiago/cherry) - Tiny webchat server. `GPL-2.0` `Go`
 - [Conduit](https://conduit.rs/) - A simple, fast, and reliable chat server powered by Matrix. ([Source Code](https://gitlab.com/famedly/conduit)) `Apache-2.0` `Rust`