add markdown
diff --git a/_includes/nav_header.html b/_includes/nav_header.html
new file mode 100644
index 0000000..c121456
--- /dev/null
+++ b/_includes/nav_header.html
@@ -0,0 +1,46 @@
+<div class="masthead">
+ <p class="lead">
+ <a href="{{ site.url }}index.html"><img src="{{ site.url }}img/asterixdb.png" style="height:75px; width:auto; vertical-align:bottom; margin-top:10px;"/></a>
+ </p>
+</div>
+
+<nav class="navbar navbar-default">
+ <div class="container">
+ <div class="navbar-header">
+ <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target=".navbar-collapse">
+ <span class="sr-only">Toggle navigation</span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </button>
+ <a class="navbar-brand" href="{{ site.url }}index.html">Overview</a>
+ </div>
+ <div class="navbar-collapse collapse">
+ <ul class="nav navbar-nav">
+ <li><a href="{{ site.url }}download.html">Download</a></li>
+ <li class="dropdown">
+ <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Documentation<span class="caret"></span></a>
+ <ul class="dropdown-menu" role="menu">
+ <li class="dropdown-header">Stable release</li>
+ <li><a href="{{ site.DOCS_BASE_URL }}/index.html">Documentation for {{ site.STABLE_VERSION }}<i class="fa fa-external-link fa-sm"></i></a></li>
+ <li class="divider"></li>
+ <li class="dropdown-header">Snapshot release</li>
+ <li><a href="{{ site.UNSTABLE_DOCS_BASE_URL }}/index.html">Documentation for {{ site.UNSTABLE_VERSION }} <i class="fa fa-external-link fa-sm"></i></a></li>
+ </ul>
+ </li>
+ <li><a href="{{ site.url }}about.html">About</a></li>
+ <li><a href="{{ site.url }}community.html">Community</a></li>
+ <li class="dropdown">
+ <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Contributing <span class="caret"></span></a>
+ <ul class="dropdown-menu" role="menu">
+ <li class="dropdown-header">For New Contributors</li>
+ <li><a href="{{ site.url }}dev-setup.html">Development Setup</a></li>
+ <li class="divider"></li>
+ <li class="dropdown-header">For Committers</li>
+ <li><a href="{{ site.url }}pushing.html">Pushing changes</a></li>
+ </ul>
+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </div>
+ </nav>