cherrytree2html.py was splitted into smaller modules in richtextools/ directory:

richtextools/__init__.py
richtextools/parser.py
richtextools/getnodepath.py
richtextools/richtextools.py
richtextools/guessparagraphs.py

Signed-off-by: Bystroushaak <bystrousak@kitakitsune.org>
Added another needed modules to richtextools/richtextools.py.
Added support for Atom feed.
Added support for disabling Atom feed feature.

Signed-off-by: Bystroushaak <bystrousak@kitakitsune.org>
Fixed support for HTML Atom entries.
Added example.