grovelight.cxx: improve example code
grovelight.cxx: improve example code

Signed-off-by: Sarah Knepper <aa6f32c7068de0436ab460eb7d52c137f945f426@intel.com>
Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

ShawnHymel/upm,jontrulson/upm,andreivasiliu2211/upm,tripzero/upm,Propanu/upm,malikabhi05/upm,MakerCollider/upm,rafaneri/upm,g-vidal/upm,srware/upm,nitirohilla/upm,stefan-andritoiu/upm,tylergibson/upm,srware/upm,izard/upm,0xD34D/upm,jontrulson/upm,ShawnHymel/upm,Propanu/upm,pylbert/upm,rafaneri/upm,sasmita/upm,mircea/upm,rafaneri/upm,Vaghesh/upm,pylbert/upm,kissbac/upm,spitfire88/upm,whbruce/upm,Jon-ICS/upm,Vaghesh/upm,fieldhawker/upm,Propanu/upm,g-vidal/upm,ShawnHymel/upm,stefan-andritoiu/upm,yoyojacky/upm,GSmurf/upm,stefan-andritoiu/upm,skiselev/upm,rafaneri/upm,whbruce/upm,intel-iot-devkit/upm,fieldhawker/upm,spitfire88/upm,kissbac/upm,pylbert/upm,srware/upm,intel-iot-devkit/upm,tripzero/upm,Propanu/upm,mircea/upm,stefan-andritoiu/upm,nitirohilla/upm,jontrulson/upm,arfoll/upm,kissbac/upm,noahchense/upm,skiselev/upm,mircea/upm,g-vidal/upm,pylbert/upm,0xD34D/upm,Jon-ICS/upm,GSmurf/upm,MakerCollider/upm,tylergibson/upm,noahchense/upm,Vaghesh/upm,tylergibson/upm,afmckinney/upm,srware/upm,nitirohilla/upm,malikabhi05/upm,arfoll/upm,arfoll/upm,sasmita/upm,yoyojacky/upm,srware/upm,andreivasiliu2211/upm,sasmita/upm,skiselev/upm,spitfire88/upm,intel-iot-devkit/upm,yoyojacky/upm,sasmita/upm,kissbac/upm,Jon-ICS/upm,ShawnHymel/upm,tylergibson/upm,sasmita/upm,malikabhi05/upm,GSmurf/upm,fieldhawker/upm,pylbert/upm,g-vidal/upm,arfoll/upm,yoyojacky/upm,whbruce/upm,tripzero/upm,skiselev/upm,malikabhi05/upm,afmckinney/upm,whbruce/upm,noahchense/upm,spitfire88/upm,stefan-andritoiu/upm,afmckinney/upm,andreivasiliu2211/upm,GSmurf/upm,Propanu/upm,izard/upm,g-vidal/upm,tripzero/upm,Vaghesh/upm,fieldhawker/upm,nitirohilla/upm,nitirohilla/upm,mircea/upm,skiselev/upm,Propanu/upm,kissbac/upm,Jon-ICS/upm,0xD34D/upm,ShawnHymel/upm,tripzero/upm,jontrulson/upm,Jon-ICS/upm,0xD34D/upm,yoyojacky/upm,afmckinney/upm,spitfire88/upm,mircea/upm,izard/upm,pylbert/upm,jontrulson/upm,andreivasiliu2211/upm,noahchense/upm,afmckinney/upm,tylergibson/upm,malikabhi05/upm,intel-iot-devkit/upm,rafaneri/upm,whbruce/upm,MakerCollider/upm,MakerCollider/upm,malikabhi05/upm,intel-iot-devkit/upm,arfoll/upm,MakerCollider/upm,intel-iot-devkit/upm,skiselev/upm,stefan-andritoiu/upm,g-vidal/upm,andreivasiliu2211/upm