robotmedia/AndroidBillingLibrary — pull request #118 by serso (2014-10-16 10:56:35+00:00)
Title: Android Billing Version 3 library information

Starting from January 2015 Android Billing Version 2 will not be available as Google ends its support.
For AndroidBillingLibrary users it might be helpful to know how to upgrade to the newer API version without loosing information from the older one.