Improve documentation how to use this tool.

[atrakic]

Hi Sciencano,

I struggle to understand how to use this tool.
Can you please provide a general guide how to identify a high quality datasets and what policy to use?

Thx

[atrakic]

Also please update README with URL of online tool as seen here: https://quantumproject.zohodesk.eu/portal/en/kb/articles/is-there-any-difference-between-the-online-tool-and-the-docker-one