WIP commit for annotation processing.

Everything compiles, still need to port tests.
Annotation processing and tests

This provides annotation provessing, and changes Converter from
an interface to an abstract base class.

This will all allow for a user to annotate POJO and store it, without
needing to provide any additional information.

resolves #355
fixed copyright notices
Merge pull request #384 from basho/br-gh355-annoatation-processing

Annoatation processing