Added README doc.

Renamed example/roc_api to demo.
Added contracts

examples/demo/site/www/themes/bootstrap/tpl/page_header2.tpl

@@ -0,0 +1,28 @@
+ {if isset="$default_nav"}
+  <div class="navbar navbar-default" role="navigation">
+    <div class="container-fluid">
+    <div class="navbar-header">
+      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
+        <span class="sr-only">Toggle navigation</span>
+      </button>
+      <a class="navbar-brand" href="${site_url/}" itemprop="home" rel="home">{$page_title/}</a>
+    </div>
+    
+    <div class="navbar-collapse collapse">      
+  {/if}    
+
+      {if isset="$primary_nav"}
+            {$primary_nav/}
+      {/if}
+
+      {if isset="$secondary_nav"}
+          {$secondary_nav/}
+      {/if}  
+ 
+{if isset="$default_nav"}
+  
+     </div>
+
+  </div>
+</div>
+{/if}