The driver will come back with an invalid protocol as its not part of Appium 2.0 #16
Description
driver = new IOSDriver(new Uri("http://127.0.0.1:4723/wd/hub"), appiumOptions);
here is what the above will return:
[BROWSERSTACK_INVALID_PROTOCOL] JSONWP/MJSONWP protocol is not supported on Appium versions >= 2.0.0
This will lead you to try W3C builder but that does not give you a way to call the driver. I think there are 2 differing documentation.