Improve the doc (README)

[marcobarilari]

• installation
• general presentation
• experiment design

[marcobarilari]

@iqrashahzad14 hey, if you think that the README file with the repo explanations can be improved and have a suggestions on how we can centralize the ideas here ;)

[marcobarilari]

@Remi-Gau given the last merge of #83, should we close this one, or should we keep it open and updating the to do list? Never know what to do cause "improving the doc" is always a never ending job :)

[Remi-Gau]

yeah let's close this and open more specific issues: as you say "improving the doc" s always true.