Log Message:
update to 0.0.25
changes:
- README file was improved to provide better guidance
    for users
- show the text-web-browser converting command in
  verbose mode for better debugging
- workaround passivetex limitation for chapters
  titles starting with L
- use passivetex/fop extensions by default, provide
  --noextensions option to disable them
- basic experimental support for conversion from docbook
  to epub
-bugfixes