jlembeck/pngcrush-installer — pull request #12 by Wu-Wu (2013-12-31 10:24:02+00:00)
Title: update pngcrush to 1.7.70

Hi!

It would be nice to update the installer to deal with pngcrush v1.7.70 due to 1.7.67 has been moved to old-versions
http://sourceforge.net/projects/pmt/files/pngcrush/
so installer can not download and build 1.7.67

Here's a patch.