add readmes for all packages (#1495)
add readmes for all packages (#1495)

* add bigquery readme

* add all readmes

* copy readme as part of release script

* gcloud-node -> google-cloud-node

* fix youre good to gos

* add resource manager scope

* exclude unecessary files

googleapis/google-cloud-node,googleapis/google-cloud-node,googleapis/google-cloud-node,googleapis/google-cloud-node