add IFTTTTransformAnimation

# IFTTTTransformAnimation

## Add IFTTTTransformAnimation

IFTTTTransformAnimation Class can realize the animation with CGAffineTransform.

## Background
I think -(void)setTransform is better than -(void)setFrame:.

When you use -(void)setFrame:, many subclass of UIView like UILabel or UIButton call -(void)setNeedDisplay;

As you may know, UIKit is based on Text Kit from iOS7.
Text Kit is grate. but, high cost.

https://developer.apple.com/library/ios/documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/CustomTextProcessing/CustomTextProcessing.html

Using IFTTTFrameAnimation with UILabel instance cause excessive drawing.
I mean, Text Kit draw text every frame.

Thus, using many UIlabel makes scroll not smooth.

How do you think about it?