facebook - Like gate gone, user_likes review -

im building simple facebook promotion app, have problem gate gone - still catch page likes if can.

so thinking use user_likes permission, when use logs in app check if likes page , if no try convince him like. of course there "skip" button, users can choose , not page , still other content...

since don't have experience review process, such use of user_likes permission approved facebook or how should it?

thanks information!