scikit-image/scikit-image — pull request #959 by ahojnnes (2014-03-26 23:07:28+00:00)
Title: Warn about matplotlib backend in skimage.viewer

Addresses https://github.com/scikit-image/scikit-image/issues/884.

@tonysyu Could you please review this, as I was not sure if you intended to print the warning only for OSX?