- update example read me for physical web
- update example read me for physical web

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