This will allows to easily create multiple clients later.

First step to handle multiple, non-conflicting clients connecting to different
rooms.

`xo` was the only package not to be fixed to an exact version. Fix (hoho) this.

yarn.lock update was long overdue. Some old dependencies were not removed.

Dockerfile: replace ENTRYPOINT by CMD

See merge request !38

Make it easier to override the default command.

Dockerfile: add yarn.lock before running `yarn install`

Closes #61

See merge request !37

fix #61

update dockerignore and gitignore

Closes #60

See merge request !36

`models` should not be versioned or added to the container
added a lot of useless files to .dockerignore

fix #60

Hublot sbenhamiche#33

Closes #33

See merge request !35

Issue 55 - Manage reconnection

Allow the bot to reconnect to a conference with a proper initialisation
state

Closes #56

See merge request !34

Add LICENSE file and headers

Closes #49

See merge request !33

fix #49

[issue-34] Disconnect on meeting ending

Closes #34

See merge request !31

Add node 7 config file

See merge request !32

Issue 31

See merge request !30

Add README.md

See merge request !29

Create new section about models issue
Add other minor modifications