add test for video embed code. fixes #75
add test for video embed code. fixes #75

discourse/onebox,fantasticfears/onebox,techAPJ/onebox,aceofspades/onebox,aceofspades/onebox,riking/onebox,billy3321/onebox,tarzan/onebox,billy3321/onebox,tarzan/onebox,techAPJ/onebox,billy3321/onebox,discourse/onebox,aceofspades/onebox,tarzan/onebox,techAPJ/onebox