Add check for invalidateIntrinsicContentSize to allow iOS 5 compatibility.
Add check for invalidateIntrinsicContentSize to allow iOS 5 compatibility.
RacZo/MarqueeLabel,amitmalhotra/MarqueeLabel,cbpowell/MarqueeLabel,litt1e-p/MarqueeLabel,yunzhongyoulong/MarqueeLabel,ByunghooLim/MarqueeLabel,ihello/MarqueeLabel,KBvsMJ/MarqueeLabel,Anish-kumar-dev/MarqueeLabel,cbpowell/MarqueeLabel,suchitabohra/MarqueeLabel,zmcadam/MarqueeLabel