anchor.diff:    Angular apps are modular. They consist of many files each dedicated to a purpose.
     ES5 JavaScript doesn't have modules, but we don't want to pollute the global namespace.
     
  -  So we'll surround the code in a simple IIFE ("Immediately Invoked Function Execution").
  +  So we'll surround the code in a simple IIFE ("Immediately Invoked Function Expression").
     It receives our `app` 'namespace' object as argument. 
     We call our IIFE with `window.app` if it exists - and if it doesn't we 
     initialize it as an empty object.
     
  -+makeExample('quickstart/js/app/app.component.js', 'iife', 'app/component.js (IIFE)')(format=".")
  ++makeExample('quickstart/js/app/app.component.js', 'iife', 'app/app.component.js (IIFE)')(format=".")
     
   :marked
     Most application files *export* one thing into our faux-pas 'namespace', such as a component.
     Our `app.component.js` file exports the `AppComponent`.
     
  -+makeExample('quickstart/js/app/app.component.js', 'export', 'app/component.js (export)')(format=".")
  ++makeExample('quickstart/js/app/app.component.js', 'export', 'app/app.component.js (export)')(format=".")
     
   :marked
     A more sophisticated application would have child components that descended from
  
positive.code:   We're creating a visual component named **`AppComponent`** by chaining the
    `Component` and `Class` methods that belong to the **global Angular core namespace, `ng.core`**.
    
  +makeExample('quickstart/js/app/app.component.js', 'ng-namespace-funcs', 'app/component.js (Angular 2 methods)')(format=".")
    
  :marked
    The **`Component`** method takes a configuration object with two
  
negative.code: :marked
    Here is the file structure:
  
  .filetree
    .file angular2-quickstart
    .children
      .file app
      .children
        .file app.component.js
        .file boot.js
      .file index.htm
      .file license.md
  :marked
    Functionally, it's an `index.html` and two JavaScript files in an `app/` folder.
    We can handle that!
  