[Fixed #7] created multiple pubsub service fix on v4

Author: sqlProvider

CHANGELOG.md

@@ -1,3 +1,6 @@
+## Next v4.0.1
+ - Fixed the issue that created multiple pubsub services (#7).
+
 ## Next v4.0.0
  - Only version changed for anyone using Angular 4.0.0
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "angular2-pubsub",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "Pub/Sub service for Angular 2",
   "main": "./umd/angular2-pubsub.js",
   "module": "./esm/src/index.js",

src/angular2-pubsub.module.ts

@@ -1,11 +1,6 @@
 import { PubSubService } from './angular2-pubsub.service';
 import { ModuleWithProviders, NgModule } from '@angular/core';
 
-@NgModule({
-  providers: [
-    PubSubService
-  ]
-})
 export class PubSubModule {
   public static forRoot(): ModuleWithProviders {
     return {