Replace httplib2 with requests
Removed traces

Removed two trace print statements
Update README/setup

Update requirements to specify requests instead of httplib2.
Use setuptools so develop mode is possible.
Better error handling

In the case of requests, it makes more sense to check if
response.content is empty; as all non-200 series response codes will
evaluate to False.
Next page fetching support

Added support for fetching the next page in a result set, given a
response.
Docstring added for new method

Added docstring for get_next_page
Merge pull request #1 from mverteuil/requests

Use requests rather than httplib2