Pin the "getting started with gcloud" snippet at the top of every page #553
Description
We do this on gcloud-node and it's awesome (http://googlecloudplatform.github.io/gcloud-node/#/docs/v0.12.0/datastore/transaction)
Can we make this happen on the docs for gcloud-python too ?