guannstar
Well, first of all im using cocoon, so i can't really help.
But i suggest reading these:
scirra.com/tutorials/4896/simplest-appodeal-tutorial-high-ecpm-earning-ads
scirra.com/tutorials/4866/how-to-integrate-ads-into-intel-xdk-android-apps-crosswalk-high-ecpm
And one more thing.
One of the guys who helped me said: in appodeal's instruction there is a step where you need to add appodeal plugin from github to xdk. But after intel's update game won't compile if you do so. But if you wont add plugin to intel, then it should work. And you will be able to see ads. (Translated from russian. Hope you can understand this)
Glad to help