updated readme added tag
updated readme added tag

AlexanderMazaletskiy/EFCircularSlider,neonaldo/EFCircularSlider,nagyistoce/EFCircularSlider,glt3953/EFCircularSlider-glt3953,sidorov-panda/EFCircularSlider,matthewyan/EFCircularSlider,SatoTakeshiX/EFCircularSlider,DmitryNek/EFCircularSlider,eliotfowler/EFCircularSlider,rainkong/EFCircularSlider