Merge pull request #6 from yannickcr/master

Update 4.md
Update 4.md

added @AntoinePlu @remitbri @SiegfriedEhret @dizwix @nedbaldessin
closes #7, #8, #9, #10 & #11
Update 4.md
Merge pull request #12 from clementgalidie/master

added @clementgalidie
date & place for 4th meetup
me too
Update 4.md
Merge pull request #13 from revolunet/patch-1

Add @revolunet to table-ronde #4.
Merge pull request #14 from remitbri/master

Add @remitbri to meetup #4.
Add @MattiSG to table-ronde #4

This commit message means I'm polite and respect the rules set forth by this loving community.
Merge pull request #15 from MattiSG/patch-1

Knock knock