dira/monsterid — pull request #1 by schuetzm (2013-05-24 21:48:16+00:00)
Title: Actually use oily_png instead of chunky_png.

It seems you intended to use `oily_png` (it is referenced in the gem spec). But to actually use it, you have to require it instead of `chunky_png` (see the usage section in https://github.com/wvanbergen/oily_png).