Update README.md
Merge of README.md
Merge branch 'score-team-master'

Merge of the README.md file
Rework of the demo's design, add private doc
update dependencies
Update dependencies
Add MUTE's presentation and 'Getting Started' part of the guide
Add an image describing messages  between the coordinator and the text editor adapter.
Add content to the guide
Keep writing doc and enhance the menu's headings detection
Add contact form
Add remote cursors and remote selection display
Update dependencies
Add date of last modification display and zeroclipboard
Add document's history management
Merge pull request #1 from MatthieuNICOLAS/master

Update from original