updated version and changes

CHANGES.txt

@@ -10,3 +10,4 @@ v1.301, August 19, 2014 -- Upgraded version number to take precedence over
                            previously botched release (sigh)
 v1.310, August 20, 2014 -- Added playlist replace and remove methods. Added auth
                            tests. Improved API docs
+v1.310, January 05, 2015 -- Added session support

README.md

@@ -64,3 +64,4 @@ If you have suggestions, bugs or other issues specific to this library, file the
 - v2.0.2 - August 25, 2014 -- Moved to spotipy at pypi
 - v2.1.0 - October 25, 2014 -- Added support for new_releases and featured_playlists
 - v2.2.0 - November 15, 2014 -- Added support for user_playlist_tracks
+- v2.3.0 - January 5, 2015 -- Added session support added by akx. 

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup
 
 setup(
     name='spotipy',
-    version='2.2.0',
+    version='2.3.0',
     description='simple client for the Spotify Web API',
     author="@plamere",
     author_email="paul@echonest.com",