Add support for pre-release grpc v1.1.0 (#281)
Add support for pre-release grpc v1.1.0 (#281)


googleapis/cloud-trace-nodejs,matthewloring/cloud-trace-nodejs,googleapis/cloud-trace-nodejs,keymetrics/vxx,matthewloring/cloud-trace-nodejs,googleapis/cloud-trace-nodejs,keymetrics/trassingue,matthewloring/cloud-trace-nodejs,keymetrics/vxx,googleapis/cloud-trace-nodejs,keymetrics/trassingue