appropriating Shailen's excellent Futures intro into tutorial

src/site/docs/tutorials/index.markdown

 ---
 layout: default
 title: "Dart Tutorials"
 description: "The Dart Tutorials—Your guide to building great web apps."
 has-permalinks: true
 rel:
   author:
     - mary-campione
 tutorial:
   id: tut-home
@@ skipping 19 matching lines @@
 <strong>Let's go!</strong> Follow the tutorials in order
 from left to right...or choose just the ones you need.
 
 <div class="tute-tabs">
 <div class="tabbable">
   <ul class="nav nav-tabs">
     <li class="active"><a href="#basics" data-toggle="tab">Get started</a></li>
     <li><a href="#dom" data-toggle="tab">Browser</a></li>
     <li><a href="#packages" data-toggle="tab">Packages</a></li>
     <li><a href="#polymer" data-toggle="tab">Polymer</a></li>
+    <li><a href="#futures" data-toggle="tab">Futures</a></li>
     <li><a href="#forms" data-toggle="tab">Forms & Data</a></li>
     <!--<li><a href="#mobile" data-toggle="tab">Mobile</a></li>-->
   </ul>
 
   <div class="tab-content">
 
   <!-- BASICS TAB -->
     <div class="tab-pane active" id="basics">
 
       Download the software and
@@ skipping 123 matching lines @@
           <img src="images/stopwatch-screenshot.png" width="200">
           </section>
         </div>
 
         <div class="col-md-6">
         </div>
 
       </div>
     </div>
 
+  <!-- FUTURES & STREAMS TAB -->
+    <div class="tab-pane" id="futures">
+      <div class="row">
+
+        <div class="col-md-6">
+          <section>
+          <h4 class="no-permalink"><a href="futures/"><img src="images/target.png" height="20" width="20">&nbsp;Use Future Based APIs</a></h4>
+          <p>A first look at Futures.</p>
+          <img src="futures/images/eventloop.png" width="200">
+          </section>
+        </div>
+
+        <div class="col-md-6">
+        </div>
+
+      </div>
+    </div>
+
   <!-- FORMS TAB -->
     <div class="tab-pane" id="forms">
 
       Various classes in the Dart libraries help you get, send, receive,
       and save user data.
       You can use input elements within forms to get data from users.
       You can use JSON to format data and HttpRequest to send requests and receive responses.
       And, finally, you can save data on the client with IndexedDB.
 
       <div class="row">
@@ skipping 51 matching lines @@
     </div>
   -->
 
   </div> <!-- end tab content-->
 </div> <!--end tabbable -->
 </div> <!-- end of tute-tabs -->
 
 {% endcapture %}
 
 {% include tutorial_main_page.html %}