This repository contains the code to generate the VSIX installer for the Visual Studio templates for the extensions on Windows.
You need to install the Visual Studio SDK to be able to open the solutions. For Visual Studio 2013 you can download it on Microsoft website. For Visual Studio 2015, it is an optional module during Visual Studio installation, you can install it later in File -> New Project -> Install Visual Studio Extensibility Tools under Visual C# / Extensibility.