Login with Google Account

• get OAuth credentials as described on https://developers.google.com/+/quickstart/php
• after checkout enter the dir and run composer install
• rename oauth-params.inc.dist to oauth-params.inc
• place client_id, client_secret and redirect_uri in oauth-params.inc
• run local web server php -S localhost:4567 and login
• on live server it recommended that you have HTTPS