Removed "open-source" reference

JavaScript is an implementation of Ecmascript which is a standard (thus open, but not open-source).
All the implementations aren't open source, hence this change.
Merge pull request #27 from Shahor/master

Manifest
Add myself to the NordJs list
Merge pull request #28 from angezanetti/master

Add myself to the NordJs members !
Update ToulouseJS team
Membres → Contacts
Merge pull request #29 from MoOx/patch-1

Update ToulouseJS team
update .gitignore for Mac OS
Update NantesJS
Merge pull request #31 from AMorgaut/master

Updates for NantesJS
Added myself to ChtiJS group
Ajout de la page conférence à Toulouse
Merge pull request #33 from goldoraf/master

Annonce de la conférence FranceJS à Toulouse
Update my mail + fix dom issue
Merge pull request #32 from jak78/master

Added myself to ChtiJS group
Merging with francejs
Merge branch 'master' of github.com:francejs/francejs.github.com
Added the LyonJS group
Merge pull request #35 from nfroidure/master

Added LyonJS Google group
Merge pull request #34 from MoOx/patch-1

Update my mail + fix dom issue