- slightly tweak LED example
- slightly tweak LED example

femtoduino/arduino-BLEPeripheral,sandeepmistry/arduino-BLEPeripheral,possan/arduino-BLEPeripheral,sandeepmistry/arduino-BLEPeripheral,possan/arduino-BLEPeripheral,pi19404/arduino-BLEPeripheral,femtoduino/arduino-BLEPeripheral,RedBearLab/arduino-BLEPeripheral,pi19404/arduino-BLEPeripheral,sandeepmistry/arduino-BLEPeripheral,RedBearLab/arduino-BLEPeripheral