Support for Internationalized URLs

PrintWhatYouLike gets a lot of traffic from outside the US, and we found that many users were unable to use PrintWhatYouLike on sites that have international characters in the URL.  For example, Wikipedia has versions of its free encyclopedia in many different languages, and the URLs for the articles include international characters, such as http://ru.wikipedia.org/wiki/Израил.  In addition, some sites have internationalized domain names, such as http://www.hören.at.  We have added support for internationalized URLs, so go print articles from Wikipedia in any language you want!