add spec for user iterating over single window to show that #901 is not an issue
add spec for user iterating over single window to show that #901 is not an issue

jkotests/watir,titusfortner/watir-webdriver,titusfortner/watir,jkotests/watir-webdriver,watir/watir,titusfortner/watir,titusfortner/watir,jkotests/watir,watir/watir,jkotests/watir,jkotests/watir,watir/watir,titusfortner/watir,watir/watir,jkotests/watir-webdriver,titusfortner/watir-webdriver