Dependencies installation

1- install humbug/php-scoper composer package globally.

https://github.com/humbug/php-scoper#composer (0.15.0 is used)

composer global require humbug/php-scoper

3- install composer packages at /dependencies dir:

cd dependencies
composer install

2- run the following at /dependencies dir:

php-scoper add-prefix
composer dump-autoload --working-dir build --classmap-authoritative