Update the ReadMe with the new demo_sleep specification
Update the ReadMe with the new demo_sleep specification

mdmintz/SeleniumBase,seleniumbase/SeleniumBase,ktp420/SeleniumBase,seleniumbase/SeleniumBase,possoumous/Watchers,ktp420/SeleniumBase,possoumous/Watchers,possoumous/Watchers,mdmintz/SeleniumBase,seleniumbase/SeleniumBase,seleniumbase/SeleniumBase,ktp420/SeleniumBase,mdmintz/SeleniumBase,mdmintz/SeleniumBase,mdmintz/seleniumspot,possoumous/Watchers,mdmintz/seleniumspot,ktp420/SeleniumBase