README update
README update

ashfurrow/GMGridView,liulinjian/GMGridView,gelosie/GMGridView,d191562687/GMGridView,PocketScientists/GMGridView,gmoledina/GMGridView,gank0326/GMGirdView,Sensis/GMGridView,SuPair/GMGridView,loverly/GMGridView,jianwoo/GMGridView,matej/GMGridView,111minutes/GMGridView-CSFork,BlessNeo/GMGridView,fhchina/GMGridView,D-cocoa/GMGridView