Before you can add sockets to your web application, you need a web application to add them to, which is exactly what we'll create in this section. We'll make a basic Express app, which we'll get up on GitHub. Then, we'll deploy it to Heroku so we can view it live in the browser.
Now, the first step to that process is going to be to making a directory. We'll do a few things together to get us all going in the right direction. The first step in the process from the desktop is to run mkdir to make a new directory for this project; I'm going to call it node-chat-app.
Then, we can use cd to navigate into that directory and we can run a few commands:
mkdir node-chat-app
cd node-chat-app
First up, npm init. As with all of our projects in this book, we'll be taking advantage of npm, so we'll run the following command...
