rs/SDWebImage — pull request #370 by jhickman7 (2013-04-25 16:40:11+00:00)
Title: Added Retina Support for Universal App Naming Conventions (@2x~iphone, @2x~ipad)

Changed NSRange parameters for searching for @2x anywhere in the
filename. This will allow universal apps to distinguish between retina
and non-retina images (i.e. my-image@2x~iphone.png,
my-image@2x~ipad.png)