Documentation updated for 0.2.x at PyPI

I reviewed all the domcunetation and i did minor changes (adding some functions that were undomcuneted, and correcting typos).

Hope you find more useful this new version of the docs. (In some point talks about a 0.2.1 that is yet unreleased, until it gets released, the code is on my GIT branch called “devel”)

PD: github pages are getting outdated and i’m planning to remove them… the documentation and the homepage there maybe will never get updated again.