Add migration to WebAssembly information to PNaCl / NaCl docs.

native_client_sdk/doc_generated/io2014.html

Index: native_client_sdk/doc_generated/io2014.html
diff --git a/native_client_sdk/doc_generated/io2014.html b/native_client_sdk/doc_generated/io2014.html
index a596726d97a877e9f1a544e0fa0040f34bfac6db..be037ae47e322508614873f4335265b156fa2822 100644
--- a/native_client_sdk/doc_generated/io2014.html
+++ b/native_client_sdk/doc_generated/io2014.html
@@ -1,7 +1,15 @@
 {{+bindTo:partials.standard_nacl_article}}
 
-<section id="building-a-nacl-app">
-<span id="io2014"></span><h1 id="building-a-nacl-app"><span id="io2014"></span>Building a NaCl App</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="building-a-nacl-app">
+<h1 id="building-a-nacl-app">Building a NaCl App</h1>
 <h2 id="in-the-browser">In the browser!</h2>
 <p>Follow along with Brad Nelson&#8217;s Google I/O 2014 talk.
 Explore our new in-browser development environment and debugger.</p>