Removed request hook that was not compatible with current requests versions
Changed the way json data is handled

Changed the way json data was handled to use requests's built in json function or property. This also gracefully falls back for earlier versions of requests.
fixed failing build for python 3
Merge pull request #1 from sosdmike/update_for_requests_version

Update for requests version compatibility.
added api version
added a test for api version
fix for failing test on python 2.6
Merge branch 'add_api_version'