How to display badgeNumber at UIButton

I am developing iphone application, I have a home page, wit开发者_StackOverflowh buttons (icons), I have an icon for notifications, I want to display a badge number on it to determine how many new notifications user has. How I can do that for UIButton? I checked the SDK and found only UITabBarItem has badge value.

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I found this helpful: http://wiki.github.com/tmdvs/TDBadgedCell/using-the-class

I used it to create my own badged button.