Ensure that stream=True is passed to requests when version >= 1.8
Use requests to read chunk data instead of parsing the raw stream

The previous code had a bug in which it assumed that the chunk data had
no newlines in it.  In 0.9.0 newlines were added to the stream results,
which exposed this bug.
Merge pull request #184 from ibuildthecloud/fix-chunking

Use Requests.iter_lines to fix #176