Files/Folders required:-
[images] config.json layer_checkout.js checkout.html response.html server.js
** Make sure node.js is installed. ** Copy required files and folders in a folder from where you run the server.
** Open Node.js command prompt and cd to folder where files are copied.
** npm init
** npm install express ejs express-session body-parser path crypto request
** Enter accesskey and secretkey in config.json
** Run server with 'node server' command. Open browser and type 'localhost:3000'.
Server URL and PORT :- http://localhost:3000