fix(quickstart): create app.ts before running tsc --watch

public/docs/js/latest/quickstart.jade

@@ -26,6 +26,13 @@
     <a href="https://github.com/angular/ts-quickstart"> <code>quickstart</code> GitHub repository</a>.
     This repository provides a faster start than building from <code>npm</code>.
     This repository includes the Angular distribution and type definitions for TypeScript.
+    
+  p.
+    Create two files, <code>index.html</code> and
+    <code>app.ts</code>, both at the root of the project:
+
+  pre.prettyprint
+      $ touch app.ts index.html
 
 // STEP 2 - Start the TypeScript compiler ##########################
 .l-main-section
@@ -49,14 +56,6 @@
 .l-main-section
   h2#section-transpile 3. Import Angular
 
-  p.
-    Create two files, <code>index.html</code> and
-    <code>app.ts</code>, both at the root of the project:
-
-  pre.prettyprint
-    $ touch index.html
-    $ touch app.ts
-
   p Inside of <code>app.ts</code>, import the type definitions from Angular:
   pre.prettyprint
     code /&#47;/ &lt;reference path="typings/angular2/angular2.d.ts" /&gt;