title: How to implement incentivized ads on corona SDK?
body: <p>Hi I am working on a game on corona SDK. I just can't figure out how to add vungle or chartboost incentivized ads on it and add virtual rewards after callback. </p>
  
  <p>I searched out for Corona Tutorials but did not find any. I can switch to other SDKs but I don't want to because Corona SDK is my favorite SDK and can never think of using any other SDK.
  Thank you</p>