updated the readme
updated the readme

ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c,ArrowElectronics/aws-iot-dragonconnect-c