try `shasum` (os x) if `sha256sum` not found
try `shasum` (os x) if `sha256sum` not found
necozay/tulip-control,necozay/tulip-control,tulip-control/tulip-control,necozay/tulip-control,tulip-control/tulip-control,tulip-control/tulip-control,tulip-control/tulip-control,necozay/tulip-control,necozay/tulip-control