title: How to load an image and rotate it according to it's orientation exif data and save it with UIImageOrientationUp exif data
body: <p>How to load an image and rotate it according to it's <code>orientation</code> <code>exif</code> data and save it with <code>UIImageOrientationUp</code> exif data (or without any orientation exif data) so that software that don't handle exif orientation data will show correctly the image ?</p>