Title: Restoring Application Snapshots

Describe the issue:
Documentation states:

"Even though you can save your application using a different filename, you cannot restore that application to a different name. That is, if your application name is "MyApp", you can save it as OurApp.tar.gz, but when you restore it you must use the original application name. "

But the next section "8.3. Migrating an Application to Another Gear" shows an example where you can specify the filename on a restore:

"rhc snapshot restore phpapp -f phpapp.tar.gz"

Suggestions for improvement:
Update restore documentation to note ability of specifying any filename for restoration.


Additional information:
Usage: rhc snapshot-restore <application> [--filepath FILE]

Restores a previously saved snapshot


Options
  -n, --namespace NAME      Namespace of the application you are restoring a snapshot
  -f, --filepath FILE       Local path to restore tarball
  -a, --app NAME            Application of which you are restoring a snapshot

Global Options
  -l, --rhlogin LOGIN       OpenShift login
  -p, --password PASSWORD   OpenShift password
  --token TOKEN             An authorization token for accessing your account.
  --server NAME             An OpenShift server hostname (default: openshift.redhat.com)
  --timeout SECONDS         The timeout for operations

  See 'rhc help options' for a full list of global options.