add requirements to README
add requirements to README

sletta/lipstick,pvuorela/lipstick,rainemak/lipstick,rainisto/lipstick,pvuorela/lipstick,rainisto/lipstick,sletta/lipstick,giucam/lipstick,matthewvogt/lipstick,pvuorela/lipstick,jusa/lipstick,rainisto/lipstick,adenexter/lipstick,matthewvogt/lipstick,giucam/lipstick,matthewvogt/lipstick,giucam/lipstick,rainemak/lipstick,sletta/lipstick,adenexter/lipstick,jusa/lipstick,rainemak/lipstick