docs: Added three columns on the Auto SDK.

Also updated the images from the design guys.

Change-Id: Idca893d461dd8a1d8374774c9eac670f1bc78d49
diff --git a/docs/html/auto/images/assets/do_02_music_night.png b/docs/html/auto/images/assets/do_02_music_night.png
new file mode 100644
index 0000000..7faccfb
--- /dev/null
+++ b/docs/html/auto/images/assets/do_02_music_night.png
Binary files differ
diff --git a/docs/html/auto/images/assets/do_05_template.png b/docs/html/auto/images/assets/do_05_template.png
index 379253d..63a07d8 100644
--- a/docs/html/auto/images/assets/do_05_template.png
+++ b/docs/html/auto/images/assets/do_05_template.png
Binary files differ
diff --git a/docs/html/auto/images/assets/do_05_template_night.png b/docs/html/auto/images/assets/do_05_template_night.png
new file mode 100644
index 0000000..6acd259
--- /dev/null
+++ b/docs/html/auto/images/assets/do_05_template_night.png
Binary files differ
diff --git a/docs/html/auto/index.jd b/docs/html/auto/index.jd
index 2c0334e..375ee36 100644
--- a/docs/html/auto/index.jd
+++ b/docs/html/auto/index.jd
@@ -53,6 +53,21 @@
   left:7px;
   z-index:1;
 }
+.sdk-link {
+  font-size:16px;
+  padding-left:5px;
+  padding-right:15px;
+}
+.sdk-link-title {
+  font-size:18px;
+  padding-left:5px;
+  padding-right:15px;
+}
+.sdk-link-desc {
+  font-size:14px;
+  padding-left:5px;
+  padding-right:15px;
+}
 </style>
 
 
@@ -201,9 +216,6 @@
           <div class="landing-section-header">
             <div class="landing-pre-h1">Coming soon</div>
             <div class="landing-h1">Android Auto SDK</div>
-            <div style="text-align:center;margin-top:20px;font-size:14pt;margin-bottom:-5px">
-                <a href="https://docs.google.com/a/google.com/forms/d/1ANgYOoYLkfyZ2JRPSU34Nep5yNaU-Ha2syXJ9b4xLrA/viewform">Sign up for updates</a>
-            </div>
           </div>
 
           <div class="landing-body">
@@ -211,19 +223,35 @@
               and tools to make your existing apps compatible with Android Auto. The first version
               of the SDK will provide templates and APIs for music, podcast, live radio, and audio
               news apps, as well as limited voice actions.</p>
-            <p style="margin-bottom:40px">
+            <p>
               Future versions of the Android Auto SDK will include support for a selection of
               Android notifications, additional voice actions, and templates and APIs for
-              messaging, communication, local search, and more.</p>
+              messaging, communication, local search, and more.
+            </p>
 
-              <a target="_blank" href="http://g.co/androidautodev">
-                <img class="landing-social-image" src="//www.google.com/images/icons/product/gplus-128.png" alt="+Android Auto Developers">
-              </a>
-              <p>
-                Join the Android Auto developer community on Google+ to stay involved, get the
-                latest updates, and exchange experiences with other developers.
-                <a target="_blank" href="http://g.co/androidautodev">+Android Auto Developers</a>
-              </p>
+            <div class="cols" style="margin-top:40px">
+              <div class="col-3-wide">
+                <p class="sdk-link-title">Updates</p>
+                <p class="sdk-link-desc">
+                  Register to receive more information and be notified when the SDK is available.
+                </p>
+                <a class="sdk-link" href="https://docs.google.com/a/google.com/forms/d/1ANgYOoYLkfyZ2JRPSU34Nep5yNaU-Ha2syXJ9b4xLrA/viewform">Sign up for updates</a>
+              </div>
+              <div class="col-3-wide">
+                <p class="sdk-link-title">Google+ Community</p>
+                <p class="sdk-link-desc">
+                  Stay involved, get updates, and exchange experiences with other developers.
+                </p>
+                <a class="sdk-link" href="http://g.co/androidautodev">Discuss on Google+</a>
+              </div>
+              <div class="col-3-wide">
+                <p class="sdk-link-title">Developer Overview</p>
+                <p class="sdk-link-desc">
+                  Learn more about developing apps for Android Auto when the SDK is available.
+                </p>
+                <a class="sdk-link" href="{@docRoot}auto/overview.html">Learn about the platform</a>
+              </div>
+            </div>
           </div>
 
         </div> <!-- end .wrap -->
diff --git a/docs/html/auto/overview.jd b/docs/html/auto/overview.jd
index 6c02641..8f05d4f 100644
--- a/docs/html/auto/overview.jd
+++ b/docs/html/auto/overview.jd
@@ -306,6 +306,24 @@
 <p>All the templates support different color schemes for day and night.
 The platform provides the state (day or night) and makes adjustments automatically.</p>
 
+<div class="cols">
+<div class="auto-col-2">
+  <div class="auto-img-container-cols">
+    <img class="auto-img-frame-cols" src="{@docRoot}auto/images/assets/00_frame.png" />
+    <img class="auto-img-shot-cols" src="{@docRoot}auto/images/assets/do_02_music.png" />
+  </div>
+</div>
+<div class="auto-col-2">
+  <div class="auto-img-container-cols">
+    <img class="auto-img-frame-cols" src="{@docRoot}auto/images/assets/00_frame.png" />
+    <img class="auto-img-shot-cols" src="{@docRoot}auto/images/assets/do_02_music_night.png" />
+  </div>
+</div>
+</div>
+<p class="img-caption">
+  <strong>Figure 6.</strong> Day and night modes.
+</p>
+
 <h3 id="customizetemplates">Customizing Templates</h3>
 
 <p>To customize the templates, provide the following app-specific resources and actions