Adding basic selection support to PSCollectionView
Adding basic selection support to PSCollectionView

CorzFree/PSTCollectionView,Anish-kumar-dev/PSTCollectionView,jianwoo/PSTCollectionView,steipete/PSTCollectionView,Amnysia/PSTCollectionView,StephaneDelcroix/PSTCollectionView,ba01ei/PSTImprovedCollectionView,godLoveLucifer/PSTCollectionView,zace-yuan/PSTCollectionView,StephaneDelcroix/PSTCollectionView,thevuuranusls/PSTCollectionView,Kevin775263419/PSTCollectionView,zjh171/PSTCollectionView,niuxinghua/PSTCollectionView