Add a method to determine if a URL is valid
Add a method to determine if a URL is valid

mdmintz/seleniumspot,mdmintz/SeleniumBase,seleniumbase/SeleniumBase,seleniumbase/SeleniumBase,mdmintz/seleniumspot,mdmintz/SeleniumBase,mdmintz/SeleniumBase,seleniumbase/SeleniumBase,seleniumbase/SeleniumBase,mdmintz/SeleniumBase