Merge pull request #4 from d-faure/master

Update README.md
Merge pull request #5 from d-faure/master

Cf. Changelog
Merge pull request #6 from d-faure/master

Cf. Changelog
Merge pull request #7 from d-faure/master

Cf. Changelog
Update KMHC.user.js
Update KMHC.meta.js
Some cleanup