Add py-google-auth 1.0.1

google-auth is the Google authentication library for Python. This library
provides the ability to authenticate to Google APIs using various methods. It
also provides integration with several HTTP libraries.

• Support for Google Application Default Credentials.
• Support for signing and verifying JWTs.
• Support for Google Service Account credentials.
• Support for Google Compute Engine credentials.
• Support for Google App Engine standard credentials.
• Support for various transports, including Requests, urllib3, and gRPC.

WWW: https://pypi.python.org/pypi/google-auth
WWW: https://github.com/GoogleCloudPlatform/google-auth-library-python