Updated with latest details on new Google metadata server specification.
New support for Google Cloud Storage configuration.
New support for Google Cloud Storage Configuration
Support official release of GCE Metadata service.

Change automatica mounting of MapR cluster via mapr-nfs.
Remove launch-mr-cluster.sh since it offers only a less useful
cluster deployment model.
Fixed specification of license file.
New file (relaunch) ... added the documentation.
Added support for MapR 3.1 with security options.
Added some error checking
Merge branch 'master' of github.com:mapr/private-gce

Conflicts:
	launch-mapr-cluster.sh
Merge branch 'master' into GCE_release

Conflicts:
	configure-mapr-instance.sh