Disallow /demos/ and update sitemap
Update Google Analytics tracking code

Now set the tracking ID as data-ga in index.php, load analytics.js
as an external JavaScript file in head.php

Update analytics.js to get property ID from document.body.data('ga')
inside of an onload listener
Disable unsupported directives
Merge branch 'master' of github.com:shgysk8zer0/chriszuber into dev
Added phpqr class as submodule

Does not work with spl_autoload
Import updates