Generate python docs from doc/python directory

[ihhub]

We have an option to compile Python module of the library. Instructions and the module locate in src/python directory. We create setup.py needed for auto generation of documentation. We need to do generation within doc/python directory. We could add an extra python file for this and a brief to-do description for the user.

[SamuelsSantos]

Use o http://www.sphinx-doc.org/pt_BR/stable/tutorial.html

[ihhub]

Hi, @SamuelsSantos . We use swig for Python module generation (please have a look at src/python/README.md file).