Improve Docs

[jaroslav-kubicek]

To help people implement harness in their stack, we should offer them better documentation. I propose GitBook (https://www.gitbook.com/) as the ideal solution.

Here is some inspiration:

• http://redux.js.org/
• http://orientdb.com/docs/last/

[rdpanek]

I agree

[rdpanek]

I'm working on it