Update snapchat.php
Update snapchat.php

@mgp25 Hah, I know why I did it last night :D. There are different auth file paths in the script and I wanted to put them all at the same (for example in function __construct there are different paths than in the functions below). I hope not to embarrass myself but anyway for me at least this change fixed the re-login issue for me (at least for now).
vikingfuneral/Hart-Challenge,TomKfr/SnAPI-Chat,modsfabio/SC-API,DarrenRainey/SC-API,hako/SC-API,marank/SC-API,JamesMarino/Snapchat-API,mgp25/SC-API