Zephyr Scale integration with Java-Selenium automation framework.

Firstly, would like to thank the person who will be answering this question.

I have a requirement to integrate Zephyr scale with the JavaSelenium automation framework.

Its a Hybrid framework and I execute the scripts using 'TestNG' .

If I run the scripts the results/reports should automatically be available in Zephyr scale. 

What's the approach for this? 

Should I integrate the framework with CI tool i.e., Jenkins and then to Zephyr Scale? If so, what's the approach?

Or else can I integrate the framework directly with Zephyr scale using REST API? If so, what's the approach.