README.md: move applyMiddleware to it's respective example (reactjs#446)

It's not used in 1st example, but used in the 2nd one.

This change makes it clear that following imports are coming from redux in the 2nd example, while cleaning up unused import in 1st.

Author: viatsko

README.md

@@ -35,7 +35,7 @@ Let's take a look at a simple example.
 ```js
 import React from 'react'
 import ReactDOM from 'react-dom'
-import { createStore, combineReducers, applyMiddleware } from 'redux'
+import { createStore, combineReducers } from 'redux'
 import { Provider } from 'react-redux'
 import { Router, Route, browserHistory } from 'react-router'
 import { syncHistoryWithStore, routerReducer } from 'react-router-redux'
@@ -110,6 +110,7 @@ You should not read the location state directly from the Redux store. This is be
 React Router provides singleton versions of history (`browserHistory` and `hashHistory`) that you can import and use from anywhere in your application. However, if you prefer Redux style actions, the library also provides a set of action creators and a middleware to capture them and redirect them to your history instance.
 
 ```js
+import { createStore, combineReducers, applyMiddleware } from 'redux';
 import { routerMiddleware, push } from 'react-router-redux'
 
 // Apply the middleware to the store