Fix iOS7 deprecation in NUITabBarItemRenderer
Fix iOS7 deprecation in NUITabBarItemRenderer

Suninus/nui,jianwoo/nui,Neosperience/nui,jianwoo/nui,antobito11/nui,ivanyang1984/nui,foxsofter/nui,Suninus/nui,foxsofter/nui,jianwoo/nui,KaterinaPetrova/nui,tombenner/nui,ivanyang1984/nui,AaronYi/nui,peantunes/nui,Suninus/nui,timbodeit/nui,AaronYi/nui,TribeMedia/nui,ivanyang1984/nui,foxsofter/nui,Joulebug/nui,Jake000/nui,tutoru/nui,jianwoo/nui,tutoru/nui,colemarkham/nui,odigeoteam/nui,Neosperience/nui,colemarkham/nui,Jake000/nui,colemarkham/nui,Stunner/nui,TribeMedia/nui,TribeMedia/nui,tutoru/nui,AaronYi/nui,Jake000/nui,Neosperience/nui