Add “Cartoon intro to Redux” to Ecosystem

docs/introduction/Ecosystem.md

@@ -66,6 +66,7 @@ On this page we will only feature a few of them that the Redux maintainers have
 
 * [redux-tutorial](https://github.com/happypoulp/redux-tutorial) — Learn how to use Redux step by step
 * [What the Flux?! Let’s Redux.](https://blog.andyet.com/2015/08/06/what-the-flux-lets-redux) — An intro to Redux
+* [A cartoon intro to Redux](https://code-cartoons.com/a-cartoon-intro-to-redux-3afb775501a6) — A visual explanation of Redux data flow
 * [Handcrafting an Isomorphic Redux Application (With Love)](https://medium.com/@bananaoomarang/handcrafting-an-isomorphic-redux-application-with-love-40ada4468af4) — A guide to creating a universal app with data fetching and routing
 * [Full-Stack Redux Tutorial](http://teropa.info/blog/2015/09/10/full-stack-redux-tutorial.html) — A comprehensive guide to test-first development with Redux, React, and Immutable