Update Smart-Photovoltaic description
Update Smart-Photovoltaic description

Merges #13

Signed-off-by: Thomas Lyet <06d512bf873e8a15e4a205c8e60f598dcc10fb98@intel.com>
Signed-off-by: Thomas Ingleby <bb80a585db4bdbe09547a7483d1a31841fd0e0e8@intel.com>

intel-iot-devkit/iot-devkit-samples,intel-iot-devkit/iot-devkit-samples,intel-iot-devkit/iot-devkit-samples,intel-iot-devkit/iot-devkit-samples