anchor.diff:    
     When we wrote ...
     ```
  -  import {bootstrap} from 'angular2/angular2';
  +  import {bootstrap} from 'angular2/platform/browser';
     
     bootstrap(AppComponent, [HeroService]);
     ```
     ... Angular translated that statement into a mapping instruction involving the Angular `provide` method
     ```
  -  import {bootstrap, provide} from 'angular2/angular2';
  +  import {bootstrap, provide} from 'angular2/platform/browser';
     
     bootstrap(AppComponent, [
       provide(HeroService, {useClass:HeroService})
  
positive.code:   We don't have a gigantic factory class to maintain.
    Both `Car` and consumer simply ask for what they need and the `Injector` delivers.
  
    This is what a **Dependency InjectionFramework** is all about. 
  
    Now that we know what Dependency Injection is and appreciate its benefits, 
    let's see how it is implemented in Angular.
  
negative.code:   We'll begin with a simplified version of the `HeroesComponent` 
    that we built in the [The Tour of Heroes](../tutorial/).
    ```
    import {Component} from 'angular2/core';
    import {Hero} from './hero';
    import {HEROES} from './mock-heroes';
    
  