updates scala-version in _config.yml
Merge pull request #179 from xeno-by/master

updates scala-version in _config.yml
Merge pull request #178 from btuduri/master

Some changes on README.md
scrapping an arguable joke in the macro guide
Merge pull request #181 from xeno-by/master

scrapping an arguable joke in the macro guide
french translation of cheatsheets page.