Got it to build the app on osx mountain lion, enumerated dependencies, fixed rawr / bundler name conflicts

 I updated the dmg as well, though the installer still doesn't work right.

re: the special rawr fork: was getting conflicts with the Bundler gem I couldn't uninstall bundler for some reason in my rvm jruby env so I forked mathias's fix and put it my own rawr fork of master, and voila, it works.

see 
https://github.com/rawr/rawr/blob/0f7c5e04c19db8c1feea6c82ffaa56ee5d90bba0/lib/app_bundler.rb#L2
https://github.com/rawr/rawr/issues/9
https://github.com/handlino/FireApp/issues/13

The work done could be better, but at least it builds and works.