You should also add the following icons in the root folder of your website (the numbers represent the width x height of the image):

• apple-touch-icon.png
  
• apple-touch-icon-precomposed.png
  
• apple-touch-icon-57x57-precomposed.png
  
• apple-touch-icon-72x72-precomposed.png
  
• apple-touch-icon-114x114-precomposed.png