feat(rxForm): First attempt to add required to checkboxes
feat(rxForm): Changed strategy for required attr to checkboxes
test(rxForm): adding a broken test case for investigation
feat(rxForm): Added test case, moved check to checkRequired method
docs(rxForm): Edited subject heading
feat(rxform): Integrate code review by klamping
Merge pull request #385 from rackerlabs/checkboxes-required

feat(rxForm): Fixes required attribute to checkboxes in rxOptionTableForm