TEST(datastore): add regression test for filtering by key.
DOCS(readme): add example for filtering by key in datastore.
storage: Streaming operations should return response body as an object if JSON.
Code reorg to handle responses across the client library.
Use language from Cloud Datastore website for description.
Merge pull request #74 from silvolu/master

TEST(datastore): add regression test for filtering by key.
Add unit tests for response handling.
Merge pull request #81 from pcostell/master

Use language from Cloud Datastore website for description.
Merge pull request #76 from rakyll/callback-stream

storage: Streaming operations should return response body as an object
Merge pull request #75 from stephenplusplus/master

fixes #38 return key/prop combined object.
fix(datastore): fix regression test for filter by key.

Broken by api change in #75.
Merge pull request #89 from silvolu/fix-datastore-regression

fix(datastore): fix regression test for filter by key.
#41 : _action_All methods removed.