Facebook Support.

* Modified setup.sh to handle .pkg files, since that's how the facebook SDK is packaged.
* Added Facebook config Info.plist (and re-ordered items so URL Schemes are at the bottom,
  since you need to modify one).
* Hooked up facebook login button with super simple workflow.
Unfortunately, the normal way to configure the Facebook SDK is via info.plist settings.  You *can* set your App ID and Display Name through an API, but you can't add a URL Scheme at runtime it seems, and you have to have one (based on your App ID) for the facebook SDK login to work...  So I gave up and just put all the configuration in the Info.plist.