fixup! OCR: Add script for measuring OCR effectiveness

(Use the simpler html5 <meta charset> seeing you've specified an html5
doctype. See http://diveintohtml5.info/semantics.html#encoding )
fixup! OCR: Add script for measuring OCR effectiveness

("#!/usr/bin/python" -> "#!/usr/bin/env python" so that I can use
macports python because I use macports to install 3rd party python
packages).