In order to build this project, you will need to have Nuget installed and "Package Restore" enabled. 

To install Nuget, while in Visual Studio 2012 go to the Extenions Manager (Tools->Extensions and Updates...) and install the Nuget (version 2 or above) into Visual Studio. You will need to restart Visual Studio 2012 to complete the installation.

To enable Package Restore, open options (Tools->Options...) and find the "Package Manager" category. Select the "Allow NuGet to download missing packages during build" to have Nuget installing the packages required during the build.