Doc updates (index, features)

[ ] May break build
[ ] May break existing applications (see CHANGES.txt)
[ ] Bugfix
[ ] New Feature
[ ] Cleanup
[ ] Optimization
[x] Documentation

features.shtml

@@ -87,9 +87,11 @@
     <a href="/documents/design/fileFormat.html">Static configuration using an
       ASCII file</a></li>
   <li><div class="box">git</div>
-    Automatic configuration of Multi-GPU workstations</a></li>
+    <a href="/documentation/user/configuration.html">Automatic configuration</a>
+    of Multi-GPU workstations</a></li>
   <li><div class="box">git</div>
-    Automatic configuration and discovery of remote scalability GPUs</a></li>
+    <a href="/documentation/user/configuration.html">Automatic configuration</a>
+    and discovery of remote scalability GPUs</a></li>
   <li><div class="box">TBD</div>
     Automatic configuration and discovery of remote display surfaces</a></li>
 </ul>
@@ -112,6 +114,7 @@
   <li><div class="box">0.2</div>
     <a href="/scalability/mixed.html">Hierarchical, multi-level</a>
     compounds</li>
+  <li><div class="box">TBD</div>Tile compounds</a></li>
   <li><div class="box">TBD</div>
     <a href="/documents/design/compounds.html">Cull compounds</a></li>
 </ul>
@@ -200,6 +203,8 @@
   <li><div class="box">0.9.2</div>
     <a href="/documents/design/nodeFailure.html">Failure tolerance</a> during
      initialization</li>
+  <li><div class="box">git</div>
+    <a href="/documents/design/nodeFailure.html">Runtime failure tolerance</a></li>
   <li><div class="box">0.3</div>
     <a href="/documents/design/objects.html">Distributed object API</a></li>
   <ul>

index.shtml

@@ -24,6 +24,11 @@
   Equalizer parallel rendering framework, and allows rapid development of
   clustered multi-GPU applications.
 </p>
+<p>
+  <a href="/gpu-sd">GPU-SD</a> is a daemon and library for the discovery and
+  announcement of graphics processing units using ZeroConf. It is used for
+  auto-configuration of Equalizer applications.
+</p>
 <p>
   <a href="http://www.libcollage.net/">Collage</a> is a cross-platform C++
   library for building heterogenous, distributed applications. It is the