fix(docs): enhance readme

tomastrajan · tomastrajan · commit 689a3a1b0e17 · 2018-09-29T22:19:07.000+02:00
diff --git a/README.md b/README.md
@@ -12,6 +12,8 @@ multiple model support and immutable data exposed as RxJS Observable.
 - [Code of Conduct](https://github.com/angular-extensions/model/blob/master/CODE_OF_CONDUCT.md)
 - [Contributing](https://github.com/angular-extensions/model/blob/master/CONTRIBUTING.md)
 - [Changelog](https://github.com/angular-extensions/model/blob/master/CHANGELOG.md)
+- [Blog](https://medium.com/@tomastrajan/model-pattern-for-angular-state-management-6cb4f0bfed87) about introduction to Angular Model Pattern 
+- [Advanced Usage Patterns](https://tomastrajan.github.io/angular-model-pattern-example#/advanced) with more how-tos and examples
 
 ## Documentation
 
@@ -70,7 +72,7 @@ multiple model support and immutable data exposed as RxJS Observable.
 
 4.  Use our new `<app-todo></app-todo>` component in the template of the `app.component.html`
 
-Please mind that you might be using different application prefix than `app-` o adjust accordingly.
+Please mind that you might be using different application prefix than `app-` so adjust accordingly.
 
 ## Model API
 
@@ -169,9 +171,15 @@ All the original examples and documentation are still valid. The only difference
 you can add `@angular-extensions/model` with `ng add` instead of installing `ngx-model` or having to copy model pattern
 implementation to your project manually.
 
-Check out the [Blog Post](https://medium.com/@tomastrajan/model-pattern-for-angular-state-management-6cb4f0bfed87) and
-[Advanced Usage Patterns](https://tomastrajan.github.io/angular-model-pattern-example#/advanced)
-for more how-tos and examples.
+One of the changes compared to `ngx-model` is that the `@angular-extensions/model` uses new
+`providedIn: 'root'` syntax (since Angular 6) so that we don't need to import `NgxModelModule`
+or anything similar to register `ModelFactory` into Angular dependency injection (DI) context.
+All we have to do is to import `ModelFactory` in the constructor of at least one service in our 
+application like this `constructor(private modelFactory: ModelFactory<SomeType[]>) {}` and we're
+good to go. This new feature is called tree-shakeable providers:
+
+> There is now a new, recommended, way to register a provider, directly inside the @Injectable() decorator, using the new providedIn attribute. It accepts 'root' as a value or any module of your application. When you use 'root', your injectable will be registered as a singleton in the application, and you don’t need to add it to the providers of the root module. Similarly, if you use providedIn: UsersModule, the injectable is registered as a provider of the UsersModule without adding it to the providers of the module ([source](https://blog.ninja-squad.com/2018/05/04/what-is-new-angular-6/))
+
 
 ## Contributing
 
