Remove deep batchedUpdates require(). Fixes #170

Author: STRML

lib/environment/Environment.js

@@ -1,7 +1,7 @@
 "use strict";
 
 // batchedUpdates is now exposed in 0.12
-var batchedUpdates = require("react-dom").unstable_batchedUpdates || require('react').batchedUpdates || require('react/lib/ReactUpdates').batchedUpdates;
+var batchedUpdates = require("react-dom").unstable_batchedUpdates || require('react').batchedUpdates;
 
 /**
  * Base abstract class for a routing environment.