title: Default route is not working in angular 5
body: <p>I have setup lazy routing like below,</p>
  
  <pre><code>const appRoutes : Routes = [
  { path : '' , redirectTo : '/posts' , pathMatch:'full' },    
  { path : 'posts',  component:PostsComponent ,  children: [
      {path : 'contact' , component : ContactComponent },
      {path : ':slugurl' , component : SinglepostComponent }, 
      {path : 'category/:category' , component : PostfeedComponent },   
      {path : '' , component : PostfeedComponent },             
  ]},
  { path : 'about', loadChildren : './aboutme/aboutme.module#AboutmeModule' },    
  { path : 'admin',  loadChildren: './admin/admin.module#AdminModule' , canActivate: [ AuthGuard ] },  
  { path : 'login', loadChildren : './login/login.module#LoginModule' },]
  
  export const routing: ModuleWithProviders = RouterModule.forRoot(appRoutes);
  </code></pre>
  
  <p>But its always redirect to about path, As you can see I have given the default route to post though. Please let me know where I should make the correction to make it work.</p>