Setting up LibPostal (JPostal) on Windows in Java

I'm trying to setup libpostal/jpostal on my Windows 10 machine in a Java environment. I followed the Windows Installation Guide on GitHub.

I am able to see the libpostal folder installed under: C:\xxx\Program Files\libpostal\ with sub folders: .git, autom4te.cache, data, m4, resources etc.

However, when I run:

AddressExpander expander = AddressExpander.getInstance();

I get the following error:

Exception in thread "main" java.lang.UnsatisfiedLinkError: no jpostal_expander in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867)
    at java.lang.Runtime.loadLibrary0(Runtime.java:870)
    at java.lang.System.loadLibrary(System.java:1122)
    at com.mapzen.jpostal.AddressExpander.<clinit>(AddressExpander.java:7)
    at jpostal.JPostal.execute(JPostal.java:24)
    at global_projects.GlobalMain.main(GlobalMain.java:37)

I normally use Maven for my build. However, since there is currently no Maven repository for JPostal, I am using Gradle.

I followed the solution suggested on this GitHub thread by adding the following gradle.build file, however I still get the same error.

What am I doing wrong?