* Removed relay and rotary from grove library
* Removed relay and rotary from grove SWIG interfaces
* Fixed warning for o2 printf %
* Fixed return value warning for _get_normalized method used by
my analog sensors.
Signed-off-by: Noel Eck <noel.eck@intel.com>
Added the C source for the emg sensor with necessary changes to cmake,
examples, docs.
* Renamed all files with groveemg to emg
* Replaced all instances of groveemg with emg
* Added C source for emg sensor
* Updated all cmake files
* Added C example for emg sensor
Signed-off-by: Noel Eck <noel.eck@intel.com>