node addon api Example


### node addon api vector example
> [Send C++ class to node with ObjectWrap without data loss - node-addon-api](https://www.gitmemory.com/issue/nodejs/node-addon-api/500/503317387)


### node-addon-api Promise Example
> [Can you create example for async promise? · Issue #85 · nodejs/node-addon-examples](https://github.com/nodejs/node-addon-examples/issues/85)







