add core file descriptions

Author: filipesilva

public/docs/ts/latest/cookbook/third-party-lib.jade

@@ -92,49 +92,64 @@ code-example(language="sh" class="code-shell").
 a#seed
 .l-main-section
 :marked
-  ## What's in the QuickStart seed?
+  ## What's in the QuickStart Library seed?
 
-block qs-seed
-  :marked
-    The **QuickStart seed** contains the same application as the QuickStart playground.
-    But its true purpose is to provide a solid foundation for _local_ development.
-    Consequently, there are _many more files_ in the project folder on your machine, 
-    most of which you can [learn about later](setup-systemjs-anatomy.html "Setup Anatomy").
+  The **QuickStart Library seed** contains a similar structure to the **Quickstart seed*.
+  It's modified to build and test a library instead of an application.
+  
+  Consequently, there are _many different files_ in the project, 
+  most of which you can [learn about later](library-setup-anatomy.html "Library Setup Anatomy").
 
-block core-files
-  a#app-files
-  :marked
-    Focus on the following three TypeScript (`.ts`) files in the **`/src`** folder.
+  Focus on the following TypeScript (`.ts`) files in the **`/src`** folder.
 
-  .filetree
-    .file src
+.filetree
+  .file src
+  .children
+    .file demo
     .children
       .file app
       .children
         .file app.component.ts
         .file app.module.ts
-      .file main.ts
-
-  +makeTabs(`
-      setup/ts/src/app/app.component.ts,
-      setup/ts/src/app/app.module.ts,
-      setup/ts/src/main.ts
-    `, '', `
-      src/app/app.component.ts,
-      src/app/app.module.ts,
-      src/main.ts
-    `)(format='.')
+    .file lib
+    .children
+      .file component
+      .children
+        .file lib.component.ts
+      .file service
+      .children
+        .file lib.service.ts
+      .file index.ts
+      .file module.ts
+
++makeTabs(`
+    quickstart-lib/ts/src/demo/app/app.component.ts,
+    quickstart-lib/ts/src/demo/app/app.module.ts,
+    quickstart-lib/ts/src/lib/component/lib.component.ts,
+    quickstart-lib/ts/src/lib/service/lib.service.ts,
+    quickstart-lib/ts/src/lib/index.ts,
+    quickstart-lib/ts/src/lib/module.ts
+  `, '', `
+    src/demo/app/app.component.ts,
+    src/demo/app/app.module.ts,
+    src/lib/component/lib.component.ts,
+    src/lib/service/lib.service.ts,
+    src/lib/index.ts,
+    src/lib/module.ts
+  `)(format='.')
 
 :marked
   Each file has a distinct purpose and evolves independently as the application grows.
 
   Files outside `src/` concern building, deploying, and testing your app.
   They include configuration files and external dependencies.
 
-  Files inside `src/` "belong" to your app.
-  Add new Typescript, HTML and CSS files inside the `src/` directory, most of them inside `src/app`,
-  unless told to do otherwise.
+  Files inside `src/lib` "belong" to your library, while `src/demo` contains a demo application
+  that loads your library.
 
+  Libraries do not run by themselves, so it's very useful to have this "demo" app while developing 
+  to see how your library would look like to consumers.
+  
   The following are all in `src/`
 
 style td, th {vertical-align: top}
@@ -145,29 +160,36 @@ table(width="100%")
     th File
     th Purpose
   tr
-    td <ngio-ex>app/app.component.ts</ngio-ex>
+    td <ngio-ex>demo/app/app.component.ts</ngio-ex>
     td
       :marked
-        Defines the same `AppComponent` as the one in the QuickStart.
-        It is the **root** component of what will become a tree of nested components
-        as the application evolves. 
-  tr(if-docs="ts")
-    td <code>app/app.module.ts</code>
+        A demo component that renders the library component and a value from the library service.
+  tr
+    td <code>demo/app/app.module.ts</code>
+    td
+      :marked
+        A demo `NgModule` that imports the Library `LibModule`.
+  tr
+    td <ngio-ex>lib/component/app.component.ts</ngio-ex>
+    td
+      :marked
+        A sample library component that renders an `h2` tag.
+  tr
+    td <code>lib/service/lib.service.ts</code>
     td
       :marked
-        Defines `AppModule`, the  [root module](appmodule.html "AppModule: the root module") that tells Angular how to assemble the application.
-        Right now it declares only the `AppComponent`.
-        Soon there will be more components to declare.
+        A sample library service that exports a value.
   tr
-    td <ngio-ex>main.ts</ngio-ex>
+    td <code>lib/index.ts</code>
     td
       :marked
-        Compiles the application with the [JIT compiler](../glossary.html#jit) and
-        [bootstraps](appmodule.html#main "bootstrap the application") 
-        the application's main module (`AppModule`) to run in the browser.
-        The JIT compiler is a reasonable choice during the development of most projects and
-        it's the only viable choice for a sample running in a _live-coding_ environment like Plunker.
-        You'll learn about alternative compiling and [deployment](deployment.html) options later in the documentation.
+        The public API of your library, where you choose what to export to consumers.
+  tr
+    td <code>lib/module.ts</code>
+    td
+      :marked
+        The library's main `NgModule`, `LibModule`.
+
 
 
 .l-main-section
@@ -184,6 +206,19 @@ table(width="100%")
 
     If you're new to Angular, we recommend staying on the [learning path](learning-angular.html "Angular learning path").
 
+
+.l-main-section
+:marked
+  ## Appendix: library-setup-anatomy
+
+  content
+
+.l-main-section
+:marked
+  ## Appendix: testing libraries
+
+  content
+
 =============
 
 .l-main-section