package yserial as EGG; list it on pypi.python.org

[rsvp]

jrush wrote in his review: "Looks very cool but difficult to install except manually place on PYTHONPATH. Please package as an egg and list on pypi.python.org so automated tools like zc.buildout and easy_install can find it. A tiny setup.py is all that is needed."

Currently the download consists simply of a single file, the module itself, and relies on the user to place it in whatever directory is most suitable (or just soft link to it). Is that reasonable?