Merge pull request #844 from nathankot/fix-transition-detection

Fix dropdown is.animating when transition is not included.

src/modules/dropdown.js

@@ -567,8 +567,8 @@ $.fn.dropdown = function(parameters) {
           },
           animated: function($subMenu) {
             return ($subMenu)
-              ? $subMenu.is(':animated') || $subMenu.transition('is animating')
-              : $menu.is(':animated') || $menu.transition('is animating')
+              ? $subMenu.is(':animated') || $subMenu.transition && $subMenu.transition('is animating')
+              : $menu.is(':animated') || $menu.transition && $menu.transition('is animating')
             ;
           },
           visible: function($subMenu) {
@@ -1003,4 +1003,4 @@ $.extend( $.easing, {
 });
 
 
-})( jQuery, window , document );
+})( jQuery, window , document );