Updated readme
Updated readme

Corrected the class name for animating the backgroundColor property.
pedroha/JazzHands,lionkon/JazzHands,tangwei6423471/JazzHands,revolter/JazzHands,revolter/JazzHands,ernestopino/JazzHands,tangwei6423471/JazzHands,hoangsondev/JazzHands,Learn-IOS/JazzHands,wintersweet/JazzHands,mitchellporter/JazzHands,ernestopino/JazzHands,liuruxian/JazzHands,Learn-IOS/JazzHands,zorroblue/JazzHands,hoanganh6491/JazzHands,ramoslin02/JazzHands,pedroha/JazzHands,lionkon/JazzHands,ZhuGongpu/JazzHands,liuruxian/JazzHands,Learn-IOS/JazzHands,hoanganh6491/JazzHands,ramoslin02/JazzHands,mitchellporter/JazzHands,pedroha/JazzHands,hoangsondev/JazzHands,tangwei6423471/JazzHands,hoangsondev/JazzHands,mitchellporter/JazzHands,pedroha/JazzHands,revolter/JazzHands,AlexanderMazaletskiy/JazzHands,ZhuGongpu/JazzHands,IFTTT/JazzHands,IpaliboWhyte/JazzHands,hoanganh6491/JazzHands,marcelofariasantos/JazzHands,zorroblue/JazzHands,hoanganh6491/JazzHands,ZhuGongpu/JazzHands,wintersweet/JazzHands,IpaliboWhyte/JazzHands,ZhuGongpu/JazzHands,liuruxian/JazzHands,mitchellporter/JazzHands,hoangsondev/JazzHands,AlexanderMazaletskiy/JazzHands,Learn-IOS/JazzHands,marcelofariasantos/JazzHands,lionkon/JazzHands,AlexanderMazaletskiy/JazzHands,tangwei6423471/JazzHands,mitchellporter/JazzHands,wintersweet/JazzHands,IFTTT/JazzHands,pedroha/JazzHands,hoangsondev/JazzHands,IpaliboWhyte/JazzHands,hoanganh6491/JazzHands,IFTTT/JazzHands,marcelofariasantos/JazzHands,liuruxian/JazzHands,IpaliboWhyte/JazzHands,ZhuGongpu/JazzHands,IpaliboWhyte/JazzHands,tangwei6423471/JazzHands,liuruxian/JazzHands,ramoslin02/JazzHands,ernestopino/JazzHands,Learn-IOS/JazzHands,zorroblue/JazzHands