add exos 1 and 2
add exos 1 and 2

maechlerludivine/ecvd-js,guillaumebarranco/ecvd-js,guillaumebarranco/ecvd-js,morgangiraud/ecvd-js,Rouksana/ecvd-js,Rouksana/ecvd-js,morgangiraud/ecvd-js,maechlerludivine/ecvd-js,maechlerludivine/ecvd-js,Rouksana/ecvd-js,morgangiraud/ecvd-js