Updated Version Checking

Updated to most recent 1.6.4 version and changed the link to the new EE3 hub on Pahimar's website. I'm pretty sure that the version checking for 1.6.4 still checks the master branch and not the 1.6.4 branch. If not, well, you can just copy it over to that branch. :P

EDIT: I am correct; It checks the master branch. I guess that explains why he kept it even though he hasn't re-added version checking to the 1.7 EE3s.