Log Message:
Updated py-google-api-python-client to 1.6.3.

v1.6.3
  Version 1.6.3

  Bugfix release

  - Add notification of maintenance mode to README. (#410)
  - Fix generation of methods with abnormal page token conventions. (#338)
  - Raise ValueError is credentials and developerKey are both specified. (#358)
  - Re-generate documentation. (#364, #373, #401)
  - Fix method signature documentation for multiline required parameters. (#374)
  - Fix ZeroDivisionError in MediaDownloadProgress.progress. (#377)
  - Fix dead link to WebTest in README. (#378)
  - Fix details missing in googleapiclient.errors.HttpError. (#412)
  - Don't treat httplib2.Credentials as oauth credentials. (#425)
  - Various fixes to the Django sample. (#413)