Adding a JSDoc 3 template.

doc/template/tmpl/tutorial.tmpl

@@ -0,0 +1,19 @@
+<section>
+    
+<header>
+    <?js if (children.length > 0) { ?>
+    <ul><?js
+        var self = this;
+        children.forEach(function(t) { ?>
+        <li><?js= self.tutoriallink(t.name) ?></li>
+    <?js }); ?></ul>
+    <?js } ?>
+
+    <h2><?js= header ?></h2>
+</header>  
+
+<article>
+    <?js= content ?>
+</article>
+
+</section>