Fix error with session feature.

sleekxmpp/stanza/__init__.py

@@ -14,4 +14,5 @@ from sleekxmpp.stanza.message import Message
 from sleekxmpp.stanza.presence import Presence
 from sleekxmpp.stanza.stream_features import StreamFeatures
 from sleekxmpp.stanza.bind import Bind
+from sleekxmpp.stanza.session import Session
 

sleekxmpp/stanza/session.py

@@ -15,7 +15,7 @@ class Session(ElementBase):
     """
     """
 
-    name = 'bind'
+    name = 'session'
     namespace = 'urn:ietf:params:xml:ns:xmpp-session'
     interfaces = set()
     plugin_attrib = 'session'