title: continuously incrementing values of label by pressing the button
body: <p><img src="https://i.stack.imgur.com/DGyXP.png" alt="Here is my Main screen"></p>
  
  <p>(Newbie in IOS Dev) This is my main screen, This screen is .ccbi file and buttons are images which I've linked in my code and implementing the methods. what I am doing is when I click the Plus button value increments by one same on negative button case. but each time I've to click the button to increase/decrease the value. I want when I press the button the values should keep increasing until I un-touch the button.? How can I do this? I read somewhere that it could be done using CCLayer TouchBegin(); But I could not find material to help me understanding the mechanism. any suggestions? </p>