Added accelerometer samples taken on both my old Stratosphere and my new Droid DNA.

-Kevin
Merge branch 'rlyerly'
Added more data/graphs for some motion and lots of motion.
Committed utilities for converting hex files produced by the PollSensors app
into binary files and for throwing away MSB of those 32-bit numbers produced
by the app.

TODO: In the hex2bin utility, split values for different axes into different
files.