Changes

'''BluetoothGatt''' provides bluetooth GATT client functionality to enable communication with remote bluetooth LE devicesGATT server. Applications have to call [[B2G/Bluetooth/WebBluetooth-v2/BluetoothDevice#connectGatt.28boolean_aAutoConnect.29|device.connectGatt()]] to create a BluetoothGatt for a remote LE deviceGATT server.