fix(ngRedux): Add filter operator

Author: Evan Schultz

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ng2-redux",
-  "version": "3.2.1-beta.0",
+  "version": "3.2.1-beta.1",
   "description": "Angular 2 bindings for Redux",
   "main": "./lib/index.js",
   "scripts": {

src/components/ng-redux.ts

@@ -12,6 +12,7 @@ import {
 import { Observable } from 'rxjs/Observable';
 import { BehaviorSubject } from 'rxjs/BehaviorSubject';
 import 'rxjs/add/operator/map';
+import 'rxjs/add/operator/filter';
 import 'rxjs/add/observable/from';
 import 'rxjs/add/operator/distinctUntilChanged';
 import 'rxjs/add/operator/switchMap';