ExceptionsCollector easy to extend

[cesarreyes3]

In case #748 doesn't get merged, i could extend the class with that code and just return

public function collect() {
    return array(
        'count' => count($this->exceptions),
        'exceptions' => $this->exceptions
    );
}

Also for anyone who wants to extend the same class, just with another name

[barryvdh]

Is this still required?

[cesarreyes3]

After the other PR is merged, it is not required by me, but it does not affect anything if someone wants to use it in the future.