add missing documentation
add missing documentation

railsdog/CleanroomLogger,emaloney/CleanroomLogger,emaloney/CleanroomLogger,LiuDeng/CleanroomLogger,Adorkable-forkable/CleanroomLogger,Adorkable-forkable/CleanroomLogger,railsdog/CleanroomLogger,LiuDeng/CleanroomLogger