(#2794) - explain normal 404s in console.info

![screenshot 2014-10-05 16 31 19](https://cloud.githubusercontent.com/assets/283842/4519879/bc44853c-4cce-11e4-9883-1e6d8210a463.png)

IIRC IE10 barfs if you actually try to call `console.info`, which is why I check for `'info' in console`. In any case, the Travis tests will tell us, since we test IE10.

If somebody has defined `console.info` to be a non-function like a string or something, then something has gone horribly wrong.