typo in logic.php

[rgmears]

http: missing before //html5shim ... on line 475

[NinjaSentry]

Hi, good to know you're keeping an eye out for bugs, but it's not actually a typo.

This is known as a protocol relative style url. It allows a resource to be loaded from either http:// or https:// , without needing to specifically set it as one or the other.

You can find more info about it here :
http://www.paulirish.com/2010/the-protocol-relative-url/

Also used in the html5 boilerpate for example :
https://github.com/h5bp/html5-boilerplate/blob/master/index.html

:)