How to download the addon. classes with light physics into a common project with libGDX?

Question

Java

I want to make lighting in a 2D game, but I ran into a problem.
As I understand it, in libGDX itself you cannot use it at such a level as here . But here I do not quite understand how to download and configure it all correctly.
I tried to download it to the project itself and then add the line to build.gradle

compile "com.badlogicgames.box2dlights:box2dlights:1.4"

to the dependencies block in IntelijIDEA. But I didn't get anything.
What have I done wrong?