Hey Munir!
First of all, thank you for the purchase!
Let me clarify: you want to display links to older posts and newer posts at the bottom of the category pages? Please note that Kabuki does have built-in pagination but it is numeric, i.e. display numbers instead of “older posts” and “newer posts”. The pagination will display automatically once you have more posts in a particular category than is set by the limit in “Settings -> Reading”, “Blog pages show at most” option.
In case I misunderstood your question, please let me know!
Sincerely,
Andrew | Satori Studio