text: //
  //  CALayer.h
  //  ImageFilterExample
  //
  //  Created by James Womack on 5/16/14.
  //  Copyright (c) 2014 James Womack. All rights reserved.
  //
  
  #import <QuartzCore/CAShapeLayer.h>
  
  @interface NGLayer : CAShapeLayer
  - (instancetype)initWithImage:(UIImage *)image;
  @end
  