How do I integrate tappx to my APP?

Hi, I will like to use tappx, this is a web page for apps promotion free, you put ads in your app and other developers do the same. So how can i do it?

I saw a topic saying how to use with javascript but i don´t understand, he say you need to use this javascript code "tappx.showBannerAd(true, ", ");" using the browser plugin, but i don´t know how to do it.

This is the topic:

My app use Crosswalk to export to Android on Intel XDK

Thanks for the help