Add rubygem-google-cloud-pubsub-v1 0.1.2

API Client library for the Cloud Pub/Sub V1 API

Cloud Pub/Sub is a fully-managed real-time messaging service that allows you to
send and receive messages between independent applications.

WWW: https://github.com/googleapis/google-cloud-ruby
WWW: https://github.com/googleapis/google-cloud-ruby/tree/master/google-cloud-pubsub-v1