Update the trivial derive example, added more logging lines, added options for verification.
merger with featre/merge_dev_and_docs
Merge branch 'feature/merge-dev-and-docs' into open_iab_update_trivial_drive_example
removed unused imports
- added check for api service for receipt verification
- the check will happen on the ui main thread.
- added more logging lines
- updated purchase verification helper class TAG
- when call api service for receipt verification make sure to submit the
original sku in the purchase respose not the value in purchase.getSku().
- you have to get the original sku from purhcase.getOriginalJson() to
construce the right api end point