fridayjams Hi Sure,
It is pretty straight forward I was having hard time also with ad integration. I basically purchased Cranberrygame's phonegap plugin (6$) which works well also with Intel XDK.
Check out this thread for all the plugins he has the leadbolt purchase link in there as well.
bit.ly/1BtSe5G
When you pay with paypal he will send you en email with the plugin, helpfiles and example capx files as well so you can see who the plugin can be used. The plugins works.
For Android you need to export as Android Crosswalk and when you open the Intel XDK instead of creating a blank project (after you say new project) you should select import Existing HTML files and create the project in that matter. In that way XDK sees the plugins directly.
For ios you just need to export as phonegap and do the same procedures above. There will be a step by step plugin showing you what to do. I made the leadbolt work like this you can check out my game online to see who the plugins work.
bit.ly/160kRL5
Good Luck with it.