Create sphinx documentation

[DavidKnott]

The goal of this PR is to facilitate contributions to the docs by creating a base starting point (using sphinx and recommonmark ).
To runs the docs locally enter:

1. pip install -r requirements-docs.txt
2. make docs
   @yograterol

[yograterol]

PEP8,

extensions = [
    'sphinx.ext.autodoc'
]

[yograterol]

@DavidKnott I see this good, just solve the conflicts. We could create an issue with the points to document and hand out the tasks.

[yograterol]

👍

[DavidKnott]

@yograterol I fixed the conflicts and the styling. Good thinking, let's split up the doc work into manageable issues.