mmanela/Chocolatey-Packages — pull request #2 by TomOne (2013-07-14 15:02:34+00:00)
Title: bumped opera to v15.0

Starting with version 15.0 there is necessary a workaround to install Opera silently. It is described here: http://my.opera.com/community/forums/topic.dml?id=1684042

I included this workaround into your package and tested it. It works perfectly.