This presentation is really two presentations. First, it's an attempt to dispell the "webkit solves all the problems" myth. Second, it covers some of the important gotchas/notes when building a jquery mobile app with rails.
If you want to view the presentation or use the slides the iframed sample application references a rails app. Yours truly runs the application in a vagrant vm but it's a vanilla rails app so getting it up and running and chainging the iframe link should be trivial.