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

Issue 32

Closes #32

See merge request !28

Change base image to node:8-alpine

Add tmp/ and nohup.out to .dockerignore

Add docker-compose.yaml file

- Add ports, volumes, env_file and environment options
- Update the .gitignore to add .env file
- Access URL for the external services now uses docker-compose hostnames.
- selenium-server is now a container service dependency

Selenium is no longer directly managed by directly by hublot, but is instead an
external service dependency.
This dependency is managed in docker-compose with a selenium server image.

This simplifies a LOT of things and make the project organization cleaner.

The `getMyId` method had incorrect case. It caused errors since it was
called with a different (correct) case elsewhere.

Fix case.

client/lib/live-reco.js indent was all screwed up. fixing it.

No actual code change.

Online reco method will now return a boolean indicating of the method succeded
or failed.
When starting online reco, if it fails, it will be tried again at fixed
intervals.

robot now displays some log when initialized.

issue-29 client: robot now tries to reopen STT WS on error

Closes #29

See merge request !25

client: Hublot no longer record itself

Closes #30

See merge request !24

Refactored `recordParticipant` in order to extract two independent functions for
getting a STT WS and recording the user stream.

On STT WS error, try to get a new STT WS for the user.

STT lib mock is now extracted into a separate object for cleaner handling.

Previously hublot would record and try to transcribe it own media stream. Add
check to avoid this.

Add the `getMyId` function to the controller in order for hublot to know its own
participant Id.

The build time has been reduced,
and the Dockerfile now respects the best practices.

Add the script xvfb-chromium
Change start.sh to launch xvfb-chromium, and export the right value of DISPLAY
Change also the base image of the Dockerfile (node:8-strecht)

Add the "webdriver-manager update ...." command.