nnhubbard/ZSPinAnnotation — pull request #1 by timothyarnold (2012-02-17 23:56:45+00:00)
Title: fixed annotation pins for Retina displays

+ changed calls to UIGraphicsBeginImageContext() to calls to UIGraphicsBeginImageContextWithOptions(), allowing the specification of the screen scale. This allows the annotation pins to be drawn properly on Retina displays.