To run the application simple use cmd or powershell, navigate to a folder. Clone the repository and use git clone to clone the repository to the folder. Then, navigate to the trainker folder in powershell or cmd and run "npm install" then run the server.js file either in a IDE or by typing "node server.js". Then head to http://localhost:8080/.
NOTE you will need Node.js installed. You can do so here https://nodejs.org/en/download/node