modified README
modified README

mkaring/nifty-gui,atomixnmc/nifty-gui,Teencrusher/nifty-gui,bgroenks96/nifty-gui,Teencrusher/nifty-gui,relu91/nifty-gui,void256/nifty-gui,atomixnmc/nifty-gui,Ryszard-Trojnacki/nifty-gui,Ryszard-Trojnacki/nifty-gui,void256/nifty-gui,bgroenks96/nifty-gui