v0.9.15

Android: Move Android permissions to config.xml

iOS Add plugin variables

• BLUETOOTH_USAGE_DESCRIPTION: [iOS] defines the values for NSBluetoothAlwaysUsageDescription.

• IOS_INIT_ON_LOAD: [iOS] Prevents the Bluetooth plugin from being initialised until first access to the bluetoothClassicSerial window object. This allows an application to warn the user before the Bluetooth access permission is requested.