python: add sphinx doc configuration
python/docs: add .. so sphinx configuration syspath
python: add generated pb2 module
python: mirror deps in requirements.txt
python: freeze requirements
python: clean dependencies
Merge https://github.com/GoogleCloudPlatform/google-cloud-datastore into merged-sphinx-docs
Merge pull request #22 from proppy/merged-sphinx-docs

Merge sphinx doc generation into master branch
python: update generated proto
python: fix #23
java: add http initializer
proto: better comments
nodejs: add jwt service account to atlas demo
proto: update documentation for field constraints
v1beta2-rev1-2.1.0
Update README.md
Update todo.js
Fix handling of missing entity in Node.js Adams demo.
Update RELEASE_NOTES.md to reference resolved issues.
v1beta2-rev1-2.1.1
Fix the URL for the Python docs