fnando/i18n-js — pull request #134 by tessi (2013-02-19 14:01:25+00:00)
Title: fix 'invalid byte sequence in US-ASCII' in i18n/translations.js.erb

It's basically the same as in this pull request: https://github.com/fnando/i18n-js/pull/74

Not sure if there is a better way in Rails3 now. However, this fixes the problem.