Update Readme

Reflecting the changes that RxJS does not need to be imported separately anymore. When using the example as a template, it currently throws an app breaking error.

Author: ImreC

README.md

@@ -39,15 +39,14 @@ import io from 'socket.io-client'
 import feathersVuex from 'feathers-vuex'
 import store from '@/store/'
 import rx from 'feathers-reactive'
-import RxJS from 'rxjs'
 
 const socket = io('http://localhost:3030', {transports: ['websocket']})
 
 const feathersClient = feathers()
   .configure(hooks())
   .configure(socketio(socket))
   .configure(auth({ storage: window.localStorage }))
-  .configure(rx(RxJS, {idField: '_id'}))
+  .configure(rx({idField: '_id'}))
   // Register feathers-vuex by passing the store and options
   .configure(feathersVuex(store, {
     idField: '_id',