Add doc for Option.apply factory
Add doc for Option.apply factory

scala/scala,martijnhoekstra/scala,lrytz/scala,scala/scala,scala/scala,martijnhoekstra/scala,martijnhoekstra/scala,scala/scala,martijnhoekstra/scala,lrytz/scala,lrytz/scala,scala/scala,martijnhoekstra/scala,martijnhoekstra/scala,lrytz/scala,scala/scala,lrytz/scala,lrytz/scala