fix(quickstart): add styles.css to js quickstart

Fix #1684

While looking at this, I saw that plunkers were getting some unintended unit testing files and added them to the default plunker builder ignore.

public/docs/_examples/quickstart/js/styles.1.css

@@ -0,0 +1,14 @@
+/* #docregion */
+h1 {
+  color: #369;
+  font-family: Arial, Helvetica, sans-serif;
+  font-size: 250%;
+}
+body {
+  margin: 2em;
+}
+
+ /*
+  * See https://github.com/angular/angular.io/blob/master/public/docs/_examples/styles.css
+  * for the full set of master styles used by the documentation samples
+  */

public/docs/js/latest/quickstart.jade

@@ -31,9 +31,9 @@ figure.image-display
       .file app.component.js
       .file main.js
     .file index.html
-    .file license.md
+    .file styles.css
 :marked
-  Functionally, it's an `index.html` and two JavaScript files in an `app/` folder.
+  Functionally, it's an `index.html`, `styles.css` and two JavaScript files in an `app/` folder.
   We can handle that!
   
   Of course we won't build  many apps that only run in plunker. 
@@ -43,6 +43,7 @@ figure.image-display
   1. Write the Angular root component for our app
   1. Bootstrap it to take control of the main web page
   1. Write the main page (`index.html`)
+  1. Add some CSS (`styles.css`)
   
 .l-sub-section
   :marked
@@ -257,6 +258,16 @@ code-example(format="").
   metadata, finds the `my-app` selector, locates an element tag named `my-app`,
   and loads our application between those tags.
 
+:marked
+  ### Add some style
+  Styles aren't essential but they're nice, and `index.html` assumes we have
+  a stylesheet called `styles.css`.
+
+  Create a `styles.css` file in the *#{_indexHtmlDir}* folder and start styling, perhaps with the minimal
+  styles shown below. For the full set of master styles used by the documentation samples,
+  see [styles.css](https://github.com/angular/angular.io/blob/master/public/docs/_examples/styles.css).
++makeExample('quickstart/js/styles.1.css', null, 'styles.css')(format=".")
+
 .l-main-section
 :marked
   ## Run!
@@ -306,15 +317,17 @@ figure.image-display
       .file main.js
     .file index.html
     .file package.json
+    .file styles.css
 :marked
   And here are the files:
 +makeTabs(`
     quickstart/js/app/app.component.js,
     quickstart/js/app/main.js,
     quickstart/js/index.html,
-    quickstart/js/package.1.json
+    quickstart/js/package.1.json,
+    quickstart/js/styles.1.css
   `,null,
-  `app/app.component.js, app/main.js, index.html,package.json`)
+  `app/app.component.js, app/main.js, index.html, package.json, styles.css`)
 :marked
 
 .l-main-section

tools/plunker-builder/plunkerBuilder.js

@@ -143,6 +143,10 @@ function initConfigAndCollectFileNames(configFileName) {
     '!**/tslint.json',
     '!**/.editorconfig',
     '!**/systemjs.config.js',
+    '!**/wallaby.js',
+    '!**/karma-test-shim.js',
+    '!**/karma.conf.js',
+    '!**/spec.js'
    ];
   Array.prototype.push.apply(gpaths, defaultExcludes);