To compile our project now, we will open our project in Visual Studio; Visual Studio is the program that allows us to turn the assets and code that Unity produced into a format that the HoloLens can use. In order to do so, perform the following steps:
First, we need to make sure that the Windows Explorer has appeared and then double-click on the App folder; this is what you should see:
Double-click on HoloLens Beginners Guide.sln. This will load Visual Studio Community 2015 and the newly built project.