Add “Routing” to the ecosystem

Author: gaearon

docs/introduction/Ecosystem.md

@@ -25,6 +25,11 @@ On this page we will only feature a few of them that the Redux maintainers have
 * [redux-analytics](https://github.com/markdalgleish/redux-analytics) — Analytics middleware for Redux
 * [redux-gen](https://github.com/weo-edu/redux-gen) — Generator middleware for Redux
 
+## Routing
+
+* [redux-router](https://github.com/rackt/redux-router) — Redux bindings for React Router
+* [redux-simple-router](https://github.com/jlongster/redux-simple-router) — Ruthlessly simple bindings to keep React Router and Redux in sync
+
 ## Components
 
 * [redux-form](https://github.com/erikras/redux-form) — Keep React form state in Redux