I always played it as:
E--------------------------XXXXXXXXXXXX------------------------
B--------------------------XXXXXXXXXXXX------------------------
G------0-3-5-0-3-6/5-0-3-5-3-0---------------------------------
D------0-3-5-0-3-6/5-0-3-5-3-0---------------------------------
A--------------------------XXXXXXXXXXXX------------------------
E--------------------------XXXXXXXXXXXX------------------------
But as I progressed in guitar playing there are at least 500 ways of playing the intro, the one published here
is one of them so in other words good job :D