Billing Services with Ionic Cordova App

@poynt4 please take a look at this test app, run it on your terminal and see if you are getting success callback: https://github.com/dsnatochy/TestCordovaApp/blob/master/www/index.html

Hi dennis,
thanks for your support. Testing your app on our device, callbacks are correctly executed.
We have downloaded again the cordova plugin for poynt and full re-build our application: now callbacks seem to be executed.

Thanks again,
WhatsIN dev team