How to implement flip transition effect for UIView
How to implement flip transition effect for UIView as like in "flipboard" application. here i already have sample which will make flip from left to right or right to left. But here i want to implement fold flip from bottom to top or top to bottom.

How to implement flip transition effect for UIView
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How to implement flip transition effect for UIView as like in "flipboard" application. here i already have sample which will make flip from left to right or right to left. But here i want to implement fold flip from bottom to top or top to bottom.
