Calibrate Accellerometer in Rolando 2, Rolando and Rolando Lite

Thanks for an excellent looking game with Rolando 2!

My iPhone's accelerometer is out by about 6 degrees. This means that I have to tilt the device 6 degrees to the right to keep the Rolando's in Rolando 2 from rolling to the left. I.e. if I keep the device parallel to the ground the Rolando's rolls slowly to the left.

Can you please add accellerometer calibration to the next update? This is a small change I would imagine but it would greatly improve the experience of people with devices with this small issue. It is really annoying me.