Fix ngSwipeSpec for MSIE documentMode detection

test/ngTouch/directive/ngSwipeSpec.js

@@ -17,7 +17,7 @@ var swipeTests = function(description, restrictBrowsers, startEvent, moveEvent,
     // Skip tests on IE < 9. These versions of IE don't support createEvent(), and so
     // we cannot control the (x,y) position of events.
     // It works fine in IE 8 under manual testing.
-    var msie = +((/msie (\d+)/.exec(navigator.userAgent.toLowerCase()) || [])[1]);
+    var msie = document.documentMode || +((/msie (\d+)/.exec(navigator.userAgent.toLowerCase()) || [])[1]);
     if (msie < 9) {
       return;
     }