update L Preview message and disallow crawling /preview

Change-Id: I08a81a3057874a0c19f863b0d0c3e9dafa757e6d

docs/html/preview/index.html

@@ -272,13 +272,11 @@ This is the Android SDK Preview License Agreement (the “License Agreement”).
   style="position:absolute;z-index:100;right:215px;top:375px">Android 5.0 API Overview</a>
 
       <div style="width:440px">
-<p>Android 5.0 (Lollipop) is almost here and users will begin receiving
-device updates in November. To help you prepare, the Android 5.0 SDK is now available
-with final APIs.</p>
+<p>Android 5.0 (Lollipop) is now out of preview and available to users.</p>
 
-<p>Since the L Developer Preview began, various APIs and behaviors have changed,
-so if you've been using the Preview SDK
-you should update now to test your apps and take advantage of new features.</p>
+<p>If you previously developed apps with the L Developer Preview, be aware that various APIs and
+behaviors have changed, so you should update your SDK now to test your apps and take advantage of
+new features in Android 5.0.</p>
 
 
         <p>To get the latest Android 5.0 SDK:</p>

docs/html/robots.txt

@@ -15,4 +15,5 @@ Disallow: /shareables/
 Disallow: /guide/tutorials/
 Disallow: /guide/samples/
 Disallow: /community/
+Disallow: /preview/
 Sitemap: http://developer.android.com/sitemap.txt