Integrating D3.js visualizations in a React app

I've been working with D3.js and React lately, and in this post I wanted to share a few ways I found in building components and the interface between them. I think they help make both libraries work together quite nicely. We'll be building a small example to illustrate this, and you can find the full code on GitHub, as well as a running version of the app. I'll also assume that you have some basic knowledge of React and D3.js.