Solve log issues

Now that phpDocumentor use PSR3 Log component, logs sent from reflection generate notice errors, using integer instead of string.

Such as :

```
PHP Notice:  Undefined offset: 2 in /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Command/Helper/LoggerHelper.php on line 122
PHP Stack trace:
PHP   1. {main}() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/bin/phpdoc.php:0
PHP   2. phpDocumentor\Application->run() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/bin/phpdoc.php:29
PHP   3. Symfony\Component\Console\Application->run() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Application.php:351
PHP   4. Symfony\Component\Console\Application->doRun() /home/vagrant/www/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:121
PHP   5. Symfony\Component\Console\Application->doRunCommand() /home/vagrant/www/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:191
PHP   6. Symfony\Component\Console\Command\Command->run() /home/vagrant/www/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:897
PHP   7. phpDocumentor\Command\Project\RunCommand->execute() /home/vagrant/www/vendor/symfony/symfony/src/Symfony/Component/Console/Command/Command.php:244
PHP   8. Symfony\Component\Console\Command\Command->run() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Command/Project/RunCommand.php:253
PHP   9. phpDocumentor\Parser\Command\Project\ParseCommand->execute() /home/vagrant/www/vendor/symfony/symfony/src/Symfony/Component/Console/Command/Command.php:244
PHP  10. phpDocumentor\Parser\Parser->parse() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Parser/Command/Project/ParseCommand.php:184
PHP  11. phpDocumentor\Parser\Parser->parseFileIntoDescriptor() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Parser/Parser.php:360
PHP  12. phpDocumentor\Descriptor\ProjectDescriptorBuilder->buildFileUsingSourceData() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Parser/Parser.php:433
PHP  13. phpDocumentor\Descriptor\ProjectDescriptorBuilder->buildDescriptor() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/ProjectDescriptorBuilder.php:90
PHP  14. phpDocumentor\Descriptor\Builder\Reflector\FileAssembler->create() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/ProjectDescriptorBuilder.php:121
PHP  15. phpDocumentor\Descriptor\Builder\Reflector\FileAssembler->addClasses() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/Builder/Reflector/FileAssembler.php:53
PHP  16. phpDocumentor\Descriptor\ProjectDescriptorBuilder->buildDescriptor() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/Builder/Reflector/FileAssembler.php:123
PHP  17. phpDocumentor\Descriptor\Builder\Reflector\ClassAssembler->create() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/ProjectDescriptorBuilder.php:121
PHP  18. phpDocumentor\Descriptor\Builder\Reflector\ClassAssembler->addMethods() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/Builder/Reflector/ClassAssembler.php:60
PHP  19. phpDocumentor\Descriptor\ProjectDescriptorBuilder->buildDescriptor() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/Builder/Reflector/ClassAssembler.php:115
PHP  20. phpDocumentor\Descriptor\Builder\Reflector\MethodAssembler->create() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/ProjectDescriptorBuilder.php:121
PHP  21. phpDocumentor\Reflection\BaseReflector->getDocBlock() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Descriptor/Builder/Reflector/MethodAssembler.php:39
PHP  22. phpDocumentor\Reflection\BaseReflector->extractDocBlock() /home/vagrant/www/vendor/phpdocumentor/reflection/src/phpDocumentor/Reflection/BaseReflector.php:102
PHP  23. phpDocumentor\Reflection\ReflectionAbstract->log() /home/vagrant/www/vendor/phpdocumentor/reflection/src/phpDocumentor/Reflection/BaseReflector.php:124
PHP  24. phpDocumentor\Event\Dispatcher->dispatch() /home/vagrant/www/vendor/phpdocumentor/reflection/src/phpDocumentor/Reflection/ReflectionAbstract.php:51
PHP  25. Symfony\Component\EventDispatcher\EventDispatcher->dispatch() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Event/Dispatcher.php:84
PHP  26. Symfony\Component\EventDispatcher\EventDispatcher->doDispatch() /home/vagrant/www/vendor/symfony/symfony/src/Symfony/Component/EventDispatcher/EventDispatcher.php:53
PHP  27. call_user_func() /home/vagrant/www/vendor/symfony/symfony/src/Symfony/Component/EventDispatcher/EventDispatcher.php:164
PHP  28. phpDocumentor\Command\Helper\LoggerHelper->phpDocumentor\Command\Helper\{closure}() /home/vagrant/www/vendor/symfony/symfony/src/Symfony/Component/EventDispatcher/EventDispatcher.php:164
PHP  29. phpDocumentor\Command\Helper\LoggerHelper->logEvent() /home/vagrant/www/vendor/phpdocumentor/phpdocumentor/src/phpDocumentor/Command/Helper/LoggerHelper.php:85
```