Event Debugger for ZendDeveloperTools in Zend Framework 2

Add dependencies to composer.json:

{
    "require-dev": {
        "snapshotpl/zf-snap-event-debugger": "1.*",
        "zendframework/zend-developer-tools": "dev-master"
    }
}

And add module ZfSnapEventDebugger in appilcation.config.php. That's it!