docs: setup new SDK documentation for 2.0 and change sdk build version to 2.0...
move upgrading doc into a new guide for "updating" with
the new manager tools and remove the previous updating doc
from the dev guide. set up preliminary download page and guide
for installing the full SDK. add the requirements doc in sdk/
for all general purposes. revise the download 'thank you'
message.

bug: 2160782
diff --git a/docs/html/sdk/download.jd b/docs/html/sdk/download.jd
index 1712ae6..76f1213 100644
--- a/docs/html/sdk/download.jd
+++ b/docs/html/sdk/download.jd
@@ -57,15 +57,11 @@
 <div class="special" id="next-steps" style="display:none">
   <h2>Thank you for downloading the Android SDK!</h2>
   <p>Your download should be underway. If not, <a id="click-download">click here to start the download</a>.</p>
-  <p>If you are upgrading from a previously installed version of the Android SDK, see
-    <a href="upgrading.html" class="addVersionPath">Upgrading the SDK</a>.</p>
-  <p>If you are installing for the first time, read 
-    <a href="installing.html" class="addVersionPath">Installing the Android SDK</a> to get your environment set up.
-    Once you have completed your installation, visit the <em>Dev Guide</em> tab and begin with the 
-    <a href="/guide/tutorials/hello-world.html">Hello World</a> tutorial to create your first
-    Android application. From there, learn more about Android with the 
-    <a href="/guide/topics/fundamentals.html">Application Fundamentals</a> documentation.</p>
-  <p>If you want to re-read the license agreement, it's available to you in the <em>SDK</em> tab.</p>
+  <p>To set up your Android development environment, please read the guide to
+    <a href="installing.html" class="addVersionPath">Installing the Android SDK</a>.
+    Once you have completed the installation, see the
+    <a href="/guide/index.html">Dev Guide</a> for documentation about
+    developing Android applications.</p>
 </div>
 
 <script type="text/javascript">