I am referring to the popup window that asks the user to submit a review/rating.
I know it can be done since the Aardark app does it...it asks several times in fact!
I have discovered the most subtle value of S.O. (already obvious to all elementary school teachers) --- often by simply forming your question, your neurons rearrange and you are more successful at answering it yourself! (Either that or Google optimized my search after spying on my keystrokes and indexing my question on S.O.)
Answer found after more productive googling: http://www.mobileorchard.com/fighting-back-against-the-app-stores-negative-rating-bias/