Merge pull request #13 from oasiswork/fix-empty-list

fixes attributeerror while iterating on un-paginated DRF empty response
Merge pull request #14 from oasiswork/resource-no-headers-arg

headers is not a valid kwargs for Resource.__init__() removed
Merge pull request #15 from oasiswork/ssl-args-and-pinning

Allow ssl_args in settings.py (allows pinning)