Merge pull request #1921 from sigmavirus24/fix-session-header-none
authorKenneth Reitz <me@kennethreitz.org>
Mon, 3 Mar 2014 18:13:13 +0000 (13:13 -0500)
committerKenneth Reitz <me@kennethreitz.org>
Mon, 3 Mar 2014 18:13:13 +0000 (13:13 -0500)
Do not set headers with None value

1  2 
requests/sessions.py

Simple merge