Changes in p2html since v2.0
----------------------------

- Now rewrites '<' as '&lt;' and '>' as '&gt;' to solve problems
  with using p2html on Prolog source files which contain HTML-like stuff.

- Now identifies predicate calls preceded by an open bracket.

- Now p2html also generates an index file 'p2htmlFileIndex.html' which
  contains links to all the converted files, and all the unreferenced
  predicates

- Now also identifies and links predicates with no parameters.