docs(QuickStart): update to describe {{title}} binding

Author: wardbell

public/docs/_examples/quickstart/ts/app/app.module.ts

@@ -3,8 +3,8 @@ import { Component, NgModule } from '@angular/core';
 import { BrowserModule }       from '@angular/platform-browser';
 
 @Component({
-  template: `<h1>Hello {{title}}</h1>`,
-  selector: 'my-app'
+  selector: 'my-app',
+  template: `<h1>Hello {{title}}</h1>`
 })
 class AppComponent { title = 'Angular'; }
 

public/docs/ts/latest/quickstart.jade

@@ -1,26 +1,36 @@
 block includes
   include _util-fns
-nter
-- var step = _stepInit
+
 :marked
   The easiest way to get started with Angular is to **<live-example>try the <i>Hello Angular</i> live example</live-example>**.
   You don't need to install anything. 
   Just open it and follow along with the documentation.
   If you'd rather develop in a local environment, learn how on the [Setup](guide/setup.html) page.
 
-  Here's "Hello World" in Angular:
+  Here's a super-simple Angular application:
 
 +makeExample('app/app.module.ts','','app/app.module.ts')(format='.')
 :marked
-  The `AppComponent` template renders a "Hello Angular" header into a custom `<my-app>` element.
+  ### _AppComponent_
+  Angular applications are made of _components_. 
+  A _component_ is the combination of an HTML template and JavaScript class that controls a portion of the screen.
+  
+  According to the `selector`, this `AppComponent` displays its content inside a custom `<my-app>` tag in the `index.html`.
++makeExample('index.html','my-app','index.html (body)')(format='.')
+:marked
+  The `AppComponent` template renders the message, "Hello Angular", inside an `<h1>` header.
+  The word "Angular" appears thanks to an [interpolation binding](guide/displaying-data.html)
+  that projects the component's `title` property into the `{{title}}` slot. 
+  Change the property value from `'Angular'` to `'World'` and see what happens.
+  
+  Binding is one of many Angular features you'll discover in this documentation.
 
+  ### _AppModule_
   The `AppModule` tells Angular<br>
   &nbsp;&nbsp;***what you need*** &mdash; _imports_ the `BrowserModule` to run the application in the browser.<br>
   &nbsp;&nbsp;***what you created*** &mdash; _declares_ the `AppComponent`.<br>
   &nbsp;&nbsp;***what to show*** &mdash; _bootstrap_ the `AppComponent` onto the `index.html` web page within the `<my-app>` tag.
 
-+makeExample('index.html','my-app','index.html (body)')(format='.')
-:marked
   You'll find more _live code examples_ like this one on almost every documentation page.
 
   # TypeScript
@@ -32,6 +42,5 @@ nter
 
 .l-sub-section
   :marked
-
     ### Next step
     Start [learning Angular](guide/learning-angular.html).