Readme gcs (#181)

Author: timvaillancourt

README.rst

@@ -24,6 +24,7 @@ Features
 -  Block de-duplication and optional AES encryption at rest via `ZBackup <http://zbackup.org/>`__
    archiving method (*optional*)
 -  `AWS S3 <https://aws.amazon.com/s3/>`__ Secure Multipart backup uploads (*optional*)
+-  `Google Cloud Storage <https://cloud.google.com/storage/>`__ Secure backup uploads (*optional*)
 -  `Nagios NSCA <https://sourceforge.net/p/nagios/nsca>`__ push
    notification support (*optional*)
 -  Modular backup, archiving, upload and notification components