test by dividing the number of steps in for() by 10 and multiplying the intensity by 10 in heart.shine() - #33
add debug output

*	add debug output
*	change Serial to serial
*	change readXYZ to getXYZ
*	change readYPR to getYPR
test - remove calibration.h #32
better format of debug
test without calibration -  #32

works better, no more drift or awkward values but we need angles.