Remove information about the serialization option as we don't have it anymore

Author: zalmoxisus

README.md

@@ -68,7 +68,7 @@ Also you may run them from `./examples` folder (on port 4001 and 4002 by default
 - If something goes wrong, [open an issue](https://github.com/zalmoxisus/redux-devtools-extension/issues) or tweet me: [@mdiordiev](https://twitter.com/mdiordiev).
 
 #### How to make it faster
-Find `Redux DevTools` on the extensions page (`chrome://extensions/`). Under the title there will be an `Options` link. You may set maximum delay to `0` in order to have no delay or set to a higher value if your app generates a lot of actions. You may disable serialization if your states are plain objects with no circular references. Also, limit the quantity of stored actions to a lower value. 
+Find `Redux DevTools` on the extensions page (`chrome://extensions/`). Under the title there will be an `Options` link. You may set maximum delay to `0` in order to have no delay or set to a higher value if your app generates a lot of actions. Also, you may limit the quantity of stored actions to a lower value. 
 #### How to filter actions
 On the options page you may enable actions filtering and specify either actions to be hidden or shown in DevTools. If the latter is specified, other than those actions will be hidden.  
 #### How to disable/enable it in production