message: doc: Update feature listing in README
diff: @@ -81,11 +81,9 @@ The following crate features are available
  | `serialize_json` | None | Serde JSON serializer for Buttplug messages, needed for remote connectors |
  | `client-ws` | `client`,`serialize_json` | Websocket client connector, used to connect clients to remote servers |
  | `client-ws-ssl` | `client`,`serialize_json` | Websocket client connector with SSL capabilities |
  -| `linux-ble` | None | Bluetooth on Linux (Bluez) |
  -| `winrt-ble` | None | Bluetooth on Windows 10 (UWP/WinRT) |
  -| `corebluetooth-ble` | None | Bluetooth on macOS/iOS (CoreBluetooth) |
  +| `btleplug-manager` | None | Bluetooth hardware support on Windows, Mac, Linux, iOS |
  -Default features are `client`, `server`, and `serialize_json`.
  +Default features are `client`, `server`, `serialize_json`, and `btleplug-manager`.
  ## Building on Windows
  