MugunthKumar/MKNetworkKit — pull request #413 by wibobm (2014-02-26 02:25:46+00:00)
Title: Update UIImageView+MKNetworkKitAdditions.m

Noticed that in the wild clients would configure their backends (on rare occasions) to return image types that don't have out of the box strategies to decompress/handle in MK (such as PDF). This patch keeps the placeHolderImage displayed which looks better than flashing from the placeHolderImage to a blank UIImageView.