Used the Android app demonstrated here and added a physical joystick for remote fun. Cool, right?
The bot works with Bluetooth module and a forked version of Makeblock-App-For-Android. Lots of rework in order to build with Android Studio. Modifications to orion_firmware.ino were far easier.
Robot kit - https://store.makeblock.com/starter-robot-kit
Bluetooth Module - https://store.makeblock.com/me-bluetooth-module-dual-mode
Android Code: https://github.com/javatechs/Makeblock-App-For-Android
Orion Sketch: modified Makeblock library example orion_firmware.ino.