Use Lib in visual studio, how to go on after tutorial


I want to use this library with UE4. I compiled it as a multithreaded dll in x64 according to this tutorial.
But how do I go on?
The header files are of course nowhere to be found in visual studio and I am not quite sure whether they should pop up in VS after modifying the .build.cs file or not…

Any hints on how to get it working?

Thank you very much =)