Fix bug on using requests 1.0.4
Fix bug on using requests 1.0.4

Method requests.session() has no arguments on requests 1.0.4. They have removed them on commit https://github.com/kennethreitz/requests/commit/6acce57271efce8c17cea2f1eece943f429e3879#requests/sessions.py
infoxchange/slumber,ministryofjustice/slumber,IAlwaysBeCoding/slumber,jannon/slumber,zongxiao/slumber,CloudNcodeInc/slumber,IAlwaysBeCoding/More,samgiles/slumber,s-block/slumber,futurice/slumber