As usual, ask for something on a public forum and ~5 minutes later, I finally find it myself:

http://linksprite.com/wiki/index.php5?title=Bluetooth_4.0_BLE_Sensor_Tag/iBeacon_Station_NRF51822

I have this board, too; thanks for the pinout! Did anyone get access to a proper schematic in the meantime? E.g. how is the BMP180 connected?