text: //
  //  UIGestureRecognizer+SKBlocks.h
  //  StanKit
  //
  //  From https://github.com/kevinoneill/Useful-Bits
  //
  //  Copyright (c) 2011, Kevin O'Neill
  //  All rights reserved.
  //
  //  Redistribution and use in source and binary forms, with or without
  //  modification, are permitted provided that the following conditions are met:
  //
  //  * Redistributions of source code must retain the above copyright
  //   notice, this list of conditions and the following disclaimer.
  //
  //  * Redistributions in binary form must reproduce the above copyright
  //   notice, this list of conditions and the following disclaimer in the
  //   documentation and/or other materials provided with the distribution.
  //
  //  * Neither the name UsefulBits nor the names of its contributors may be used
  //   to endorse or promote products derived from this software without specific
  //   prior written permission.
  //
  //  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  //  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  //  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  //  DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  //  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  //  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  //  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  //  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  //  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  //  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  
  #import <UIKit/UIKit.h>
  
  /**
   The callback blocktype for a gesture recognizer
   */
  typedef void (^SKGestureRecognizerBlock)(UIGestureRecognizer *sender);
  
  @interface UIGestureRecognizer (SKBlocks)
  
  /**
   Initialize a gesture recognizer with a callback block.
   
   @param action The callback block
   */
  + (instancetype)gestureRecognizerWithBlock:(SKGestureRecognizerBlock)action;
  
  /**
   Initialize a gesture recognizer with a callback block.
   
   @param action The callback block
   */
  - (instancetype)initWithBlock:(SKGestureRecognizerBlock)action;
  
  @end
  
  
  