Fix User.timeline() method.

This method now properly returns the user timeline specifed by User.id

CHANGELOG

@@ -24,6 +24,7 @@ during upgrade will be listed here.
 	- send_direct_message() now accepts either a user/screen_name/user_id for recipient of DM
 + tweepy.debug() enables httplib debug mode
 + New Sphinx documentation (Thanks Kumar!) in doc/
++ Fix User.timeline() to return correct timeline
 
 1.2 -> 1.3 [Current release]
 =====================

tweepy/models.py

@@ -36,16 +36,16 @@ def favorite(self):
 class User(Model):
 
     def timeline(self, **kargs):
-        return self._api.user_timeline(**kargs)
+        return self._api.user_timeline(user_id=self.id, **kargs)
 
     def mentions(self, **kargs):
         return self._api.mentions(**kargs)
 
     def friends(self, **kargs):
-        return self._api.friends(self.id, **kargs)
+        return self._api.friends(user_id=self.id, **kargs)
 
     def followers(self, **kargs):
-        return self._api.followers(self.id, **kargs)
+        return self._api.followers(user_idself.id, **kargs)
 
     def follow(self):
         self._api.create_friendship(user_id=self.id)