Add a link to the great full-stack tutorial

Author: dimaip

docs/introduction/Ecosystem.md

@@ -44,6 +44,7 @@ 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)
 * [Handcrafting an Isomorphic Redux Application (With Love)](https://medium.com/@bananaoomarang/handcrafting-an-isomorphic-redux-application-with-love-40ada4468af4)
+* [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
 
 ## More