The preferred way to install this extension is through composer. Check the composer.json for this project requirements and dependencies.
To install, run
$ php composer.phar create-project leovujanic/codility
Lessons files can be found in src/lessons directory. Each Lesson has its own directory, and lessons tasks can be found in subdirectories. Task directories are named by task name following camel-case convention. The final solution is in index.php file. Every solution is under its own namespace and autoloaded with composer autoload.
Codility links can be found in comments.
Web root directory is src/web
and entry script is index.php
There are some unit test and you can run them by calling
$ php vendor/bin/codecept run