responseData is None (coverlovin 2.0)

[Thorsten Sick]

Traceback (most recent call last):
  File "./coverlovin.py", line 273, in <module>
    sys.exit(main())
  File "./coverlovin.py", line 260, in main
    urls = get_img_urls([artist,album], fileType=fileType, fileSize=fileSize, resultCount=resultCount)
  File "./coverlovin.py", line 114, in get_img_urls
    for result in results['responseData']['results']:
TypeError: 'NoneType' object has no attribute '__getitem__'

A fix in line 114 is to also check responseData:

    if results and "responseData" in results:
        for result in results['responseData']['results']:
            imgUrls.append(result['url'])