Added NoEmptyLinesAfterPhpdocsFixer

Say hello to another fixer. :)
If this is true, then, I can simply replace this function with:
```php
    private function fixWhitespace(Token $token)
    {
        $content = $token->getContent();
        // if there is more than one new line in the whitespace, then we need to fix it
        if ((substr_count($content, "\n") + substr_count($content, "\r")) > 1) {
            // the final bit of the whitespace must be the next statement's indentation
            $token->setContent("\n".end(Utils::splitLines($content)));
        }
    }
```