docs: add quickstart repository where needed

public/docs/ts/latest/guide/attribute-directives.jade

@@ -57,6 +57,7 @@ include ../_util-fns
 :marked
   ### Our first draft
   Create a new project folder (`attribute-directives`) and follow the steps in the [QuickStart](../quickstart.html).
+  As an alternative, you can clone the QuickStart from this [repository](https://github.com/IdeaBlade/angular2-quickstart).
   
   Add a new file to the `app` folder called `highlight.directive.ts` and add the following code:
 +makeExample('attribute-directives/ts/app/highlight.directive.1.ts', null, 'app/highlight.directive.ts')

public/docs/ts/latest/guide/displaying-data.jade

@@ -29,6 +29,7 @@ figure.image-display
   Let's build a small illustrative example together.
 
   Create a new project folder (`displaying-data`) and follow the steps in the [QuickStart](../quickstart.html).
+  As an alternative, you can clone the QuickStart from this [repository](https://github.com/IdeaBlade/angular2-quickstart).
 
   Then modify the `app.component.ts` file by changing the template and the body of the component.
   When we're done, it should look like this:

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

@@ -85,6 +85,7 @@ figure.image-display
 :marked
   ## Setup
   Create a new project folder (`angular2-forms`) and follow the steps in the [QuickStart](../quickstart.html).
+  As an alternative, you can clone the QuickStart from this [repository](https://github.com/IdeaBlade/angular2-quickstart).
 
   ## Create the Hero Model Class
 

public/docs/ts/latest/tutorial/toh-pt1.jade

@@ -11,7 +11,8 @@ include ../_util-fns
   and the core files for our Tour of Heroes.
 
   Copy the "QuickStart" code to a new folder and rename the folder `angular2-tour-of-heroes`.
-  We should have the following structure:
+  
+  You can also "QuickStart" from this [repository](https://github.com/IdeaBlade/angular2-quickstart). We should have the following structure:
 
 .filetree
   .file angular2-tour-of-heroes