Merge pull request #35 from gmlewis/master

Fix typo: Delimeter => Delimiter
Add support for saving and retrieving Metadata with objects.
Merge pull request #36 from gmlewis/metadata

Add support for saving and retrieving Metadata with objects.
Add support for directory-mode listings by returning the Prefixes from a List call.
Merge pull request #37 from gmlewis/prefixes

Add support for directory-mode listings by returning the Prefixes from a...