Add login form
Merge pull request #3 from BenjaminBini/master

Add *.log to .gitignore
Update README for version 2
Support noms utilisateur
Send broadcast messages when a user login/logout
Fix style
Change username display style and fix css syntax
Fix typo
Fix style of usernames and info labels
Fix documentation
Fix style of info label and usernames
Fix README for part 2

Delete not implemented feature
Fix links to blog
Merge pull request #4 from BenjaminBini/part-2

Merge part 2 to master