updated readme.md under SensorGateway
updated readme.md under SensorGateway

TinajaLabs/makerfaire2015,TinajaLabs/makerfaire2015,TinajaLabs/makerfaire2015,TinajaLabs/makerfaire2015,TinajaLabs/makerfaire2015,TinajaLabs/makerfaire2015