move javascript from examples into docs

docs/assets/js/bootstrap-dropdown.js

@@ -0,0 +1,24 @@
+(function( $ ){
+
+ /* DROPDOWN PLUGIN DEFINITION
+  * ========================== */
+
+  function clearMenus() {
+    $('a.menu').parent('li').removeClass('open')
+  }
+
+  $(function () {
+    $('body').bind("click", clearMenus)
+  })
+
+  $.fn.dropdown = function ( options ) {
+    return this.each(function () {
+      $(this).delegate('a.menu', 'click', function (e) {
+        clearMenus()
+        $(this).parent('li').toggleClass('open')
+        return false
+      })
+    })
+  }
+
+})( jQuery || ender )