Add a link to the apps I/O presentation from the docs.

chrome/common/extensions/docs/static/about_apps.html

Index: chrome/common/extensions/docs/static/about_apps.html
diff --git a/chrome/common/extensions/docs/static/about_apps.html b/chrome/common/extensions/docs/static/about_apps.html
index a43f9ffaea1363bd748e3f575f01f44c596da48c..1411813065f24cd6a651196f32d9d4f442ac2be1 100644
--- a/chrome/common/extensions/docs/static/about_apps.html
+++ b/chrome/common/extensions/docs/static/about_apps.html
@@ -13,16 +13,14 @@ that are much more powerful than those available to web apps.
 </p>
 
 <p>
-<iframe title="YouTube video player" width="610" height="380" src="http://www.youtube.com/embed/lBUGTVIJVfM" frameborder="0" allowfullscreen></iframe>
+<iframe title="YouTube video player" width="610" height="380" src="http://www.youtube.com/embed/lBUGTVIJVfM" frameborder="0" allowfullscreen></iframe><br>
 </p>
 
 <p>
-With access to Chrome APIs and services
-not available to traditional web apps,
-you can build powerful apps that interact
-with network and hardware devices,
-as well as, media apps.
-Here's a short list of examples:
+Packaged apps have have access to Chrome APIs and services not available to
+traditional web sites. You can build powerful apps that interact with network
+and hardware devices, media tools, and much more. Here's a short list of
+examples:
 </p>
 
 <ul>
@@ -31,6 +29,11 @@ Here's a short list of examples:
 	<li>Photo/video/music editing</li>
 </ul>
 
+<p>
+Watch the <a href="http://www.youtube.com/watch?v=j8oFAr1YR-0">Chrome Apps
+Google I/O presentation</a> for an in-depth introduction.
+</p>
+
 <h2 id="look">How they look</h2>
 
 <p>