Web Page Not Updating

Hello,

So I’m a new user here, and am following this tutorial closely: https://www.digitalocean.com/community/tutorials/how-to-manage-front-end-javascript-and-css-dependencies-with-bower-on-ubuntu-14-04#step-6-—-creating-a-hello-world-application

I managed to get all the way down to Step 6, where I create a new application. I figured I would do this by modifying the index.html file. However, once I have done that, my web page still displays the default nginx message! I even tried to restart the entire server as well as nginx. Does anyone know what could be the problem? Thanks!