Readme for acroconv.pl

Sample external converter for htdig 3.1.4 or later, to convert PDFs
using Adobe Acrobat 3's acroread -toPostScript option on UNIX systems.
(Use it in place of conv_doc.pl if you have acroread but not pdftotext.)
Written by Gilles Detillieux.

Usage: (in htdig.conf)

external_parsers: application/pdf->text/html /usr/local/bin/acroconv.pl

This is a pretty quick and dirty implementation, but it does seem to
give functionality equivalent to the now defunct htdig/PDF.cc parser.
I'm not a Perl expert by any stretch of the imagination, so the code
could probably use a lot of optimization to make it work better.