Add singleton usage

[abbadon1334]

For the ones who want to use it static. follow the example below :

TranslatorStatic::setTranslationsPath($this->path);
TranslatorStatic::setLanguagePrimary('it');
TranslatorStatic::setLanguageFallback('en');
TranslatorStatic::addLanguage('ro');
TranslatorStatic::register();

__('friend'); // now you can call __ which internally calls => TranslatorStatic::_