FNBlingBlingLabel
Swift实现的UILabel文字随机渐隐渐现, Swift版RQShineLabel.
暂时没做Pod和Carthage.
###基础使用Demo：
let blingBlingLabel = FNBlingBlingLabel.init(frame: CGRectMake(0, 0, 300, 200))
blingBlingLabel.needAnimation = true
blingBlingLabel.numberOfLines = 0
blingBlingLabel.textColor = UIColor.whiteColor()
blingBlingLabel.appearDuration = 1.5
blingBlingLabel.disappearDuration = 1.5
self.view.addSubview(blingBlingLabel)
blingBlingLabel.text = "FNBlingBlingLabel-TestString"
###效果：
###来源： OC原版是 RQShineLabel