laravel 5.1 how to overwrite validation class by own services?

Below is the implementation for nice validation label in Laravel 5.2. http://ift.tt/2e3OeR8

How do I implement the above method in my Laravel 5.1? i don't think i would want to direct edit the vendor file. what is the correct way to write my own validation to implement the nice validation for the label.

i am not going to upgrade my Laravel 5.2 or 5.3 due to we want the LTS version.

via Chebli Mohamed