docs(quickstart): Jesus' and Deb's suggestions.

Author: wardbell

public/docs/ts/latest/guide/setup.jade

@@ -9,12 +9,12 @@ block includes
   play with the code, share your changes with friends, and download and run the code on your own machine.
 
   As much fun as this is
-  * you can't ship your app in plunker.
-  * development in the browser is slow.
+  * you can't ship your app in plunker
+  * development in the browser is slow
   * you aren't always online
-  * the type support, refactoring, and code completion only work in your local IDE.
+  * the type support, refactoring, and code completion only work in your local IDE
 
-  # Setup a local develoment environment
+  # Setup a local development environment
 
   Fortunately, setting up a local development environment is quick and easy:
   1. `git clone` the [**QuickStart** repository](https://github.com/angular/quickstart "Clone the github QuickStart repo") 
@@ -40,9 +40,9 @@ code-example(language="sh" class="code-shell").
   1. [install the `npm` packages](#install-node "What if you don't have node?")
   1. run it
 
-  ## What's different?
+  ## What's different about the setup?
 
-  The setup delivers the same application as the [QuickStart](../quickstart.html "Angular QuickStart"),
+  The setup (zip or clone) delivers the same application as the [QuickStart](../quickstart.html "Angular QuickStart"),
   a fact you can confirm with the <live-example></live-example>.
 
   But there are _many more files_ in the project folder on your machine. 
@@ -104,7 +104,9 @@ table(width="100%")
 :marked
   ## Prerequisites: _node_ and _npm_
 
-    Node.js and npm are essential tools in modern web development. Angular developers need them too.
+    Node.js and npm are essential to modern web development with Angular and other platforms.
+    Node powers client development and build tools.
+    The _npm_ package manager, itself a _node_ application, installs JavaScript libraries.
 
     <a href="https://docs.npmjs.com/getting-started/installing-node" target="_blank" title="Installing Node.js and updating npm">
     Get them now</a> if they're not already installed on your machine.
@@ -113,9 +115,6 @@ table(width="100%")
     by running the commands `node -v` and `npm -v` in a terminal/console window.
     Older versions produce errors.
 
-    We recommend [nvm](https://github.com/creationix/nvm) for managing multiple versions of node and npm. You may need [nvm](https://github.com/creationix/nvm) if you already have projects running on your machine that use other versions of node and npm.
-  
-.l-sub-section
-  :marked
-    ### Next step
-    [The _Tour of Heroes_ tutorial](../tutorial)
+    We recommend [nvm](https://github.com/creationix/nvm) for managing multiple versions of node and npm. 
+    You may need [nvm](https://github.com/creationix/nvm) if you already have projects running on your machine that 
+    use other versions of node and npm.

public/docs/ts/latest/quickstart.jade

@@ -15,14 +15,14 @@ nter
   The `AppComponent` template renders a "Hello Angular!" header into a custom `<my-app>` element.
 
   The `AppModule` tells Angular<br>
-  &nbsp;&nbsp;***what you need*** &mdash; _imports_ the `BrowserModule` to display the application in the browser.<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
   This example is written in <a href="http://www.typescriptlang.org/" target="_blank" title="TypeScript">TypeScript</a>,
   a strongly-typed, super-set of the latest JavaScript.