Performed an overhaul on the Xcode project settings and file layout - the previous configuration was broken and didn't support unit testing and running of the demo app.

Changes
1. Removed the old Xcode settings.
2. Moved the files around.
3. Reconfigured Moby project/build as a static library project type.
4. Correctly configured Moby unit test build - correctly link the static Moby library libMoby.a now.
5. Reconfigured and add MobyDemo as a separate project - a cleaner setup.