Add migration to WebAssembly information to PNaCl / NaCl docs.

native_client_sdk/doc_generated/devguide/coding/index.html

Index: native_client_sdk/doc_generated/devguide/coding/index.html
diff --git a/native_client_sdk/doc_generated/devguide/coding/index.html b/native_client_sdk/doc_generated/devguide/coding/index.html
index 376f5054e4276fe836116f6089861e4694c4cc18..a2ff8e4ea87fcbeb0c25a2d9f0c2423d961ede59 100644
--- a/native_client_sdk/doc_generated/devguide/coding/index.html
+++ b/native_client_sdk/doc_generated/devguide/coding/index.html
@@ -1,7 +1,15 @@
 {{+bindTo:partials.standard_nacl_article}}
 
-<section id="coding-your-application">
-<span id="coding"></span><h1 id="coding-your-application"><span id="coding"></span>Coding Your Application</h1>
+<b><font color="#cc0000">
+NOTE:
+Deprecation of the technologies described here has been announced
+for platforms other than ChromeOS.<br/>
+Please visit our
+<a href="/native-client/migration">migration guide</a>
+for details.
+</font></b>
+<hr/><section id="coding-your-application">
+<h1 id="coding-your-application">Coding Your Application</h1>
 <p>This section of the Developer&#8217;s Guide describes important concepts that would be
 useful to understand in order to code your application&#8212;e.g., how an
 application is structured, and how to use the Pepper APIs.</p>