Merge pull request mar10#71 from JohnArcher/master

Update README.md

Author: mar10

README.md

@@ -262,8 +262,8 @@ $(document).contextmenu({
 </dd>
 <dt>open(target[, extraData])</dt>
 <dd>
-    Open context menu on a specific target (target must match the options.delegate filter).<br>
-    Call like <code>$(...).contextmenu("open", target[, extraData]);</code>.
+    Open context menu on a specific target (target (as a jQuery object) must match the options.delegate filter).<br>
+    Call like <code>$(...).contextmenu("open", $(target)[, extraData]);</code>.
     Optional `extraData` will be available in event handlers as <code>ui.extraData</code>.
 </dd>
 <dt>replaceMenu(menu)</dt>