Converts lat+lng from CSV to country name
everything you need to do is to install node.js dependencies by navigating to app directory in console and running npm install command. After all dependencies are finished installing, only thing left is to run the app by typing node app.js XXX.csv command, where XXX is input CSV filename. You can optionally add 'y' parameter after filename in order to use API key. API key is configured inside .env file.