Adding Master-Detail View for iPad

I([tslmy](http://www.tslimi.tk/)) think _Ratchet_ should not limit its great power to iPhone and iPod touch. Instead, iPad should be taken into consideration as well. The most different part in styling an app(between iPhone/iPod touch and iPad, of course) is that iPad has a "master-detail" view. While iPhone/iPod touch switches from master view and detail view back and forth, iPad show them simultaneously. Best example is your Settings app.