Added check_status which will check the user's  login status and fire appropriate callbacks,  without having to initiate a call to IG.login(). This also introduces changes that keep the popup from showing when we already know the user is  logged in.
Added check_status which will check the user's 
login status and fire appropriate callbacks, 
without having to initiate a call to IG.login().
This also introduces changes that keep the popup
from showing when we already know the user is 
logged in.
facebookarchive/instagram-javascript-sdk