Update script.sh - AWS_ENDPOINT
Update script.sh - AWS_ENDPOINT

AWS_ENDPOINT was not being set correctly. I added AWS_HOST just above the sed command to set what to look for in the template/aws_demo_template.c file.
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