clarify ivars
clarify ivars

poplax/NSLogger,253627764/NSLogger,zilaiyedaren/NSLogger,Palleas/NSLogger,Judy-u/NSLogger,FumikoGlover/Teleport,zilaiyedaren/NSLogger,GlennAustin/NSLogger,LuoLee/NSLogger,cnbin/NSLogger,kennethjiang/Teleport-NSLog,FumikoGlover/Teleport,poplax/NSLogger,LuoLee/NSLogger,GlennAustin/NSLogger,Judy-u/NSLogger,253627764/NSLogger,GlennAustin/NSLogger,poplax/NSLogger,layerhq/NSLogger,LuoLee/NSLogger,FumikoGlover/Teleport,foursquare/NSLogger,rvi/NSLogger,rvi/NSLogger,GlennAustin/NSLogger,foursquare/NSLogger,LuoLee/NSLogger,GlennAustin/NSLogger,253627764/NSLogger,revile/Teleport-NSLog,cnbin/NSLogger,cnbin/NSLogger,zilaiyedaren/NSLogger,poplax/NSLogger,kennethjiang/Teleport-NSLog,poplax/NSLogger,Palleas/NSLogger,foursquare/NSLogger,zilaiyedaren/NSLogger,revile/Teleport-NSLog,layerhq/NSLogger,Palleas/NSLogger,Judy-u/NSLogger,foursquare/NSLogger,253627764/NSLogger,kennethjiang/Teleport-NSLog,253627764/NSLogger,Judy-u/NSLogger,rvi/NSLogger,FumikoGlover/Teleport,Palleas/NSLogger,layerhq/NSLogger,kennethjiang/Teleport-NSLog,FumikoGlover/Teleport,foursquare/NSLogger,layerhq/NSLogger,rvi/NSLogger,revile/Teleport-NSLog,cnbin/NSLogger,revile/Teleport-NSLog,layerhq/NSLogger,revile/Teleport-NSLog,layerhq/NSLogger,Palleas/NSLogger,LuoLee/NSLogger,rvi/NSLogger