[Documentation] Improve Gitbook page with features and etc.

[DiFronzo]

What type of issue is this?

• Documentation

What is this issue about?
Improve documentation on Gitbook. Users who want to contribute need a Gitbook account and will get an invite to the team as a writer. Just ping me in the issue for access.

Special notes:

Does this issue introduce a user-facing change?

[fer-correa]

Hi @DiFronzo , I want to try to help you (and the project) in several ways. One of them is helping on the documentation issue...
I need access and any more info and instructions that you can share.
Thanks