Readme for conv_doc.pl

Sample external converter script for ht://Dig 3.1.4 and above, that
converts MS-Word, PDF or PostScript files to text (in HTML form) so
they can be indexed.  Uses the "catdoc" program to extract text from
Word documents, "pdftotext" to extract text from PDFs, and "ps2ascii"
to extract text from PostScript.

Written by Gilles Detillieux, based on the parse_word_doc.pl script
by Jesse op den Brouw <MSQL_User@st.hhs.nl>.

External converters have two advantages over external parsers.  They
are easier to write, and the parsing is done in a more consistent way
for all document types.