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