jverkoey/nimbus — pull request #124 by mypark (2011-12-09 01:36:20+00:00)
Title: checking for image mime-type in NINetworkImageView 

Forgot to add one more change to my last pull request, so here it is..

This came up as an issue when pulling nonexistent images from an Amazon s3 bucket, which returns an XML object instead of a 404. This change adds a check to make sure that we got back a valid network image by checking the mime type of the response, which is added as a property to NIOperations.