update service provider and make it Laravel 5 ready
update service provider and make it Laravel 5 ready

vincentshiqi/laravel-oci8,Ck0814/laravel-oci8,ChaosPower/laravel-oci8-1,yajra/laravel-oci8,walhalatur/laravel-oci8,yajra/laravel-oci8,vyolla/laravel-oci8