Datastore overview page seems to be empty... ?

[jgeewax]

Page Name: datastore-overview
Release: 0.7.0

https://googlecloudplatform.github.io/gcloud-python/latest/datastore-overview.html

Could we maybe walk users through the typical use cases?

[dhermes]

This was kind of resolved in #1025 but in essence #1037 covers what wasn't already done, so "merging" the two together.