Added material & ngrx

src/app/app.module.ts

@@ -1,14 +1,25 @@
+import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
 import { BrowserModule } from '@angular/platform-browser';
+import { EffectsModule } from '@ngrx/effects';
 import { NgModule } from '@angular/core';
+import { StoreModule } from '@ngrx/store';
 
 import { AppComponent } from './app.component';
+import { reducers, metaReducers } from './reducers';
+import { CommentCardComponent } from './comment-card/comment-card.component';
 
 @NgModule({
   declarations: [
     AppComponent
   ],
   imports: [
-    BrowserModule
+    BrowserModule,
+    StoreModule.forRoot(reducers, {
+      metaReducers
+    }),
+    EffectsModule.forRoot([]),
+    BrowserAnimationsModule,
+    MatToolbarModule
   ],
   providers: [],
   bootstrap: [AppComponent]