Update README.md

Merge pull request #9 from alexey-kuznetsov/update_components

- Updated node container to 8 version because it is current version and it will be new LTS version

#4: Updated docs for the project.

#4: Updating docker4drupal configs to the latest version.

Resolved #7: CLI to run Drush from outside the backend_php container

Resolved #5: Frontent unreachable because of reactjs error in docker container

Merge pull request #8 from alesrebec/3-503-service-temporary-unavailable

#3 - Fix 503 Service Temporarily Unavailable by creating a new network proxy-nginx.

Reordered install steps to make them more clear.

Merge pull request #2 from botto/not_building

Not building docker image to install react pkgs

Merge pull request #1 from dunin/patch-1

Fix broken link

Highlight that this project is for local development.