This repository contains the example GDNative C++ library in support of this tutorial: http://docs.godotengine.org/en/latest/tutorials/plugins/gdnative/gdnative-cpp-example.html
It is now based on the new NativeScript 1.1 Godot-cpp bindings library and will only work with Godot 3.1 and onwards.
Switch to the 3.0 branch to see the original NativeScript 1.0 version.