Fixed JSON and PEP 8, Added support for HTTP Status Codes.

@SudhanshuC 

I fixed the processing of the JSON reply and it returns a Maltego Entity for each [PwnedWebsites](https://haveibeenpwned.com/PwnedWebsites).

I also formatted the source code to PEP 8 as the indentation was removed by git commit  https://github.com/SudhanshuC/Maltego-Transforms/commit/5ee08528c7e67e1a75b18074d5575429002305b8

Finally, I added support for the HTTP Status Codes of [haveibeenpwned](https://haveibeenpwned.com/API/v1).