Add in-place editing & turn off the tooltip

My dear friend,

In-place editing is awesome and very user-friendly. I integrated https://github.com/GuanglinDu/bootstrap-x-editable-rails-demo to this demo. Since the tooltip interfere with the editing, I commented out the tooltip code.

Thanks for your great tutorial at http://www.gotealeaf.com/blog/integrating-rails-and-bootstrap-part-1/.
Guanglin Du