Shopify/browser_sniffer — pull request #2 by xthexder (2013-06-20 14:55:28+00:00)
Title: Add excel to regexes

Apparently Microsoft Word and Microsoft Excel have their own user-agent and built in web browser.
I added them to the regex list, and added a browser_name test for nil browsers.

Please review @fw42 @samuelkadolph