* environment files example and some README update

* improve README and last variables added to env examples

* split section on different lines

* Improve .env.example

Adds space between blooks
Comments more detailed

* Improve .envrc.example

More descriptive comments

* Update README.md typos

Co-authored-by: Pau Pérez Fabregat <saulopefa@gmail.com>

* Update README.md expresions

Co-authored-by: Pau Pérez Fabregat <saulopefa@gmail.com>

* Update README. Remove not needed command

```python manage,py makemigration``` command not needed.

* Update README.md expresions

Co-authored-by: Pau Pérez Fabregat <saulopefa@gmail.com>

* Update README.md expressions.

Correcting missing sentences and a simpler explanation for the Authentication mechanism

* Update README.md

Co-authored-by: Pau Pérez Fabregat <saulopefa@gmail.com>

* Update README.md expresions

Co-authored-by: Pau Pérez Fabregat <saulopefa@gmail.com>

* Update README.md typos

Co-authored-by: Pau Pérez Fabregat <saulopefa@gmail.com>

* correct env example files comments

* introduce on documentation static and code style validation commands

Co-authored-by: Pau Pérez Fabregat <saulopefa@gmail.com>