docs: add whitelisting instructions and new index icons

Change-Id: If720e2a5c3cae1d5cceff397d06001e551443fce
diff --git a/docs/html/preview/samples.jd b/docs/html/preview/samples.jd
index 67404b6..9bccb31 100644
--- a/docs/html/preview/samples.jd
+++ b/docs/html/preview/samples.jd
@@ -2,15 +2,4 @@
 
 @jd:body
 
-<p>The code samples for the L Developer Preview are available in the Android SDK Manager under the
-L Preview section. Here is a summary of everything that is available:</p>
-
-<ul>
-  <li></li>
-  <li></li>
-  <li></li>
-  <li></li>
-  <li></li>
-  <li></li>
-  <li></li>
- </ul>
+<p>&nbsp;</p>
\ No newline at end of file