JSHint issues

[pamelafox-coursera]

I accidentally ran JSHint over detect.js when I brought it into our codebase, and it found a few issues. You can see them by just using http://www.jshint.com/

A few of them are more worrying to me than others, like parseInt not using a radix.
But I haven't actually seen the code before so I don't feel equipped to make a judgement call on the warnings.

So.. its an FYI, feel free to close.

[darcyclarke]

I'll throw it over the coals when I get a second tonight @pamelafox-coursera. Thanks though!