Hi There
for hardware
this is Wiring style both Ardunio UNO R3 and HM-11 Bluetooth.
for software
you can find it at <LINK_TEXT text=“http://wiki.seeedstudio.com/Bluetooth_V … -bluetooth”>http://wiki.seeedstudio.com/Bluetooth_V4.0_HM_11_BLE_Module/#what-is-grove-serial-bluetooth</LINK_TEXT>