Updates README file.
Ports files from the old repo and updates to Python 2.7.
Re-adds trusted source appid text in appengine_config.py.
Fixes a typo and updates link to documentation in appengine_config.py.
Updates link to documentation in app.yaml.
Adds newline to end of README.
Merge pull request #1 from danholevoet/master

Merges in updated appengine-datastore-admin-python example.