Attempt to fix bug in artisan post-install-cmd
Attempt to fix bug in artisan post-install-cmd

See http://laravel.io/forum/03-25-2015-composer-update-throwing-error-script-php-artisan-optimize-handling-the-post-update-cmd-event-returned-with-an-error

settermjd/laravel-codeship-deployment,settermjd/laravel-codeship-deployment,settermjd/laravel-codeship-deployment