Added json converter. Fixed the fill function.
Added json converter. Fixed the fill function.

amininus/jQuery-form-serializer,jillix/jQuery-form-serializer,carabina/jQuery-form-serializer,janusnic/jQuery-form-serializer,janusnic/jQuery-form-serializer,jillix/jQuery-form-serializer,carabina/jQuery-form-serializer,amininus/jQuery-form-serializer