message: docs(ng-module-map-ngfactory-loader): update README with complete usage example
diff: @@ -8,7 +8,7 @@ This is useful when executing in node because lazy loading serves no purpose
  `npm install @nguniversal/module-map-ngfactory-loader --save`
  -`@angular/cli` will generate this map in its main output bundle if you put app.platform = 'server'.
  +`@angular/cli` will generate `LAZY_MODULE_MAP` in its main output bundle if you put app.platform = 'server'.
  ```ts
  const { provideModuleMap } = require('@nguniversal/module-map-ngfactory-loader');
  @@ -18,7 +18,23 @@ renderModuleFactory(AppModuleNgFactory, {
  document: '<app-root></app-root>',
  url: '/',
  extraProviders: [
  - provideModuleMap(LAZY_ROUTE_MAP)
  + provideModuleMap(LAZY_MODULE_MAP)
  ]
  })
  ```
  +
  +Add `ModuleMapLoaderModule` to your server module
  +
  +```ts
  +import {ModuleMapLoaderModule} from '@nguniversal/module-map-ngfactory-loader';
  +
  +@NgModule({
  + imports: [
  + AppModule,
  + ServerModule,
  + ModuleMapLoaderModule
  + ],
  + bootstrap: [AppComponent],
  +})
  +export class AppServerModule {}
  +```
  \ No newline at end of file
  