Can't build the fieldservice example

I cloned the repository at https://github.com/xamarin/prebuilt-apps.git, then I tried to build the example in both Visual Studio 2012 and Xamarin Studio 4.01 (I have the Xamarin Android Business license). In both cases I get the build errors shown below. And when I look in prebuilt-apps\FieldService\Dependencies\sqlite-net, I see that this directory is empty. Are there some files missing from the gitHub repo? What can I do to get this example to build?

Error   6   Metadata file 'D:\Dev\prebuilt-apps\FieldService\FieldService\bin\Debug\FieldService.dll' could not be found    D:\Dev\prebuilt-apps\FieldService\FieldService.Tests\CSC    FieldService.Tests
Error   4   Source file '..\Dependencies\sqlite-net\src\SQLite.cs' could not be found   D:\Dev\prebuilt-apps\FieldService\FieldService\CSC  FieldService
Error   5   Source file '..\Dependencies\sqlite-net\src\SQLiteAsync.cs' could not be found  D:\Dev\prebuilt-apps\FieldService\FieldService\CSC  FieldService