Last month was the first time Jelly Bean poked it's head up in the Android distribution charts, debuting at 0.8 percent. It's bumped that stat by a significant proportion, if not a crazy absolute amount, to 1.2 percent of smartphones and tablets using Google's OS. But ICS 4.0 was the biggest gainer, moving up sharply from 15.9 percent to 20.8 of devices at the expense of Gingerbread 2.3, which dr