petrockblog/RetroPie-Setup — pull request #291 by jasonsperske (2014-03-12 17:18:16+00:00)
Title: Update supplementary.shinc

GoodGen (part of the [GoodTools Suite](http://www.allgoodthings.us/)) changes the extensions of all matched roms to `.gen`. This change lets you audit your roms and immediately use them.