[Fixed #7] created multiple pubsub service fix

Author: sqlProvider

CHANGELOG.md

@@ -1,6 +1,9 @@
 ## Next v4.0.0
  - Only version changed for anyone using Angular 4.0.0
 
+## v2.0.4
+ - Fixed the issue that created multiple pubsub services (#7).
+
 ## v2.0.1
  - $pub command return undefined when no event subscribe.
  - $sub method bug solved. RxJS Subscriber no longer call subscribe method on start.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "angular2-pubsub",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "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 {