csquared/IMGKit — pull request #57 by lmars (2014-01-22 16:34:40+00:00)
Title: Refactor overriding of IMGKit::Configuration#wkhtmltoimage

Before this change, the initialize method would check the system for
paths to the wkhtmltoimage binary even if it will be overridden later.

With this change, we only check the system if @wkhtmltoimage hasn't been
explicitly set via the attr_writer.

Relates to #50