Update Ecosystem.md

I have run into some issue with `redux-batched-updates`, depending where you have it in your middleware chain the return value of `dispatch` will be undefined.

I am proposing my redux-batched-subscribe store enhancer instead, it moves the batching to the edge (notifying subscribe handlers) and allows for any custom function to be used.

docs/introduction/Ecosystem.md

@@ -16,9 +16,12 @@ On this page we will only feature a few of them that the Redux maintainers have
 * [redux-thunk](http://github.com/gaearon/redux-thunk) — The easiest way to write async action creators
 * [redux-promise](https://github.com/acdlite/redux-promise) — [FSA](https://github.com/acdlite/flux-standard-action)-compliant promise middleware
 * [redux-rx](https://github.com/acdlite/redux-rx) — RxJS utilities for Redux, including a middleware for Observable
-* [redux-batched-updates](https://github.com/acdlite/redux-batched-updates) — Batch React updates that occur as a result of Redux dispatches
 * [redux-logger](https://github.com/fcomb/redux-logger) — Log every Redux action and the next state
 
+## Store enhancers
+
+* [redux-batched-subscribe](https://github.com/tappleby/redux-batched-subscribe) — Batch calls to subscribe handlers with a custom function, including debouncing or React batched updates.
+
 ## Utilities
 
 * [reselect](https://github.com/faassen/reselect) — Efficient derived data selectors inspired by NuclearJS