Rewrite the documentation

[ChRen95]

The documentation should be rewritten.
As of right now the documentation is very much focused on programmers or better people with a programming background.
My opinion, the documentation should feature several open access papers witch are recalculated.
For example several examples published by C. Overhagen in his PhD or some from "Der Kalibreur".
Also a dedicated section for the IMF's own continuous rolling mill, this would help partners from IMF as well as students especially.

Furhermore I would suggest sections like:

Introduction to PyRolL (For Programmers)
Introduction to PyRolL (For Technologists)