Merge pull request #7 from bcail/master

A few test updates
Merge pull request #8 from bcail/master

some import cleanup in test classes
Merge pull request #9 from bcail/master

Mods updates
Added the ability to get a context from rightsMetadata using the username
Changed the schema location to have two URIs, as per the specification.
Bumped the version number to 0.3