[SOLVED][LIBGDX] AI with Libgdx

I want to add gdx-ai to my existing project but I have encountered several difficulties.
I don’t know exactly what I need to do. I went to this URL:

But I don’t know how to get the actual .jar file(gdx-ai.jar) and add it to my project.

If anyone can explain it to me step by step I would really appreaciate that.