支持pod导入pod'LFKit/LFBadge'超级简单，2行代码集成；xib可0代码集成，只需拖一个view关联LFBadge类即可//一般view上加角标_badge1=[[LFBadgealloc]init];[_badge1addToTabBarItem:_view1];//BarButtonItem上加角标_badge2=[[LFBadgealloc]init];[_badge2addToBarButtonItem:self.navigationItem.rightBarButtonItem];//TabBarItem上加角标_badge3=[[LFBad