Oculus Home Achievement Support

I noticed in the Oculus SDK documentation and on our developer app control page that we can define achievements for our Oculus games. That's cool and I'm glad to see that feature, but I can't quite find the documentation of how the achievement implementation is setup to work with Unity's native integration of the Oculus headset. Does anyone know where that information might be? Is the achievement support built directly into Unity or do we need a plugin of sorts? I tried looking for a plugin to pair up with the native Oculus support in Unity on the asset store, but couldn't find anything.