copy/v86 — pull request #5 by catseye (2013-11-23 21:44:07+00:00)
Title: Include filename in failure message.  Add reminder to Readme.md.

A small improvement to the error message which helped me debug why it wasn't working when I just tried loading `index.html` in Firefox... and a small reminder to that effect in the Readme which may help others avoid making the same mistake.