Upgrade to version 0.2.0

Summary: Removed the license from generated code, upgrade the version.

Reviewed By: passy

Differential Revision: D4912567

fbshipit-source-id: e72f59e286910d8c5a1a84f74676418c8f7e6f7c

More fixes

Summary: a bunch of nits and fixes as described in the attached tasks

Reviewed By: IanChilds

Differential Revision: D4905979

fbshipit-source-id: e1a25ee174c893add7d7eaf66a1d26169481678b