updated readme
Include OSGi headers in the manifest so that the JARs can be used
in a OSGi container such as Eclipse Virgo.

The new headers should not impact non-OSGi usage in any way.
Merge pull request #627 from draghuram/osgi_develop

Include OSGi headers in the manifest.
Including a converter for java.util.UUID.
Merge pull request #631 from rartavia/develop

Including a converter for java.util.UUID.
Update to Play 2.3.