public BaseSliderView setScaleType(ScaleType type){
        mScaleType = type;
        return this;
    }
When you want to implement your own slider view, please call this method in the end in `getView()` method
@param v the whole view
@param targetImageView where to place image
library/src/main/java/com/daimajia/slider/library/SliderTypes/BaseSliderView.java