Moving the actual rest function call code in Client.call_spore_function(), so a requests.Session can be attached to a Client instance and used when doing the calls.
Also, fix the extra parameters passing to requests (by using the 'params' named arg instead of inline the parameters)
Get parameters are not given as named params but throught the params= argument (as before)
Add a 'session' argument to client_from_url
Add an example using the session arguement of client_from_url
Little correction of the example using session
Merge pull request #9 from cdevienne/master

Attach a requests.Session to a Client instance