Update the template text for the NDK download page to point to new

links

Change-Id: Icb1571eae18dcd9f9f86c5fd855f15783f9d4ae4

tools/droiddoc/templates-sdk/sdkpage.cs

@@ -59,13 +59,26 @@
 <?cs else ?>
   <?cs if:ndk ?>
 
-<p>The Android NDK is a companion tool to the Android SDK that lets Android
-application developers build performance-critical portions of their apps in
-native code. It is designed for use <em>only</em> in conjunction with the
+<p>The Android NDK is a companion tool to the Android SDK that lets you build
+performance-critical portions of your apps in native code. It provides headers and
+libraries that allow you to build activities, handle user input, use hardware sensors,
+access application resources, and more, when programming in C or C++. If you write
+native code, your applications are still packaged into an .apk file and they still run
+inside of a virtual machine on the device. The fundamental Android application model
+does not change.</p>
+
+Using native code does not result in an automatic performance increase, 
+but always increases application complexity. If you have not run into any limitations
+using the Android framework APIs, you probably do not need the NDK. 
+<p>Read <a href="<?cs var:toroot ?>sdk/ndk/overview.html">What is the NDK?</a>
+to get an understanding of what the NDK offers and whether
+it will be useful to you.
+</p>
+<p>
+The NDK is designed for use <em>only</em> in conjunction with the
 Android SDK, so if you have not already installed the latest Android SDK, please
-do so before downloading the NDK. Also, please read <a href="#overview">What is
-the Android NDK?</a> to get an understanding of what the NDK offers and whether
-it will be useful to you.</p>
+do so before downloading the NDK. 
+</p>
 
 <p>Select the download package that is appropriate for your development
 computer. </p>