auth: add implicit auth snippet (#285)
auth: add implicit auth snippet (#285)


adamyanliev/golang-samples,GoogleCloudPlatform/golang-samples,danicat/golang-samples,danicat/golang-samples,GoogleCloudPlatform/golang-samples,adamyanliev/golang-samples,adamyanliev/golang-samples,GoogleCloudPlatform/golang-samples,danicat/golang-samples,adamyanliev/golang-samples