Another attempt at generating SVG strings.
Handle smooth curves.
More documentation.
Renamed to_svg() to d()
Better closed behavior, now runs under Python 2.6 + docs.
Merge pull request #13 from regebro/generate-svg

Path()'s now have a d() method to generate the Path d attribute in svg.
Merge pull request #1 from regebro/master

Merge upstream changes