Allowed remotes to have no refs.

Author: pelson

AUTHORS

@@ -14,5 +14,6 @@ Contributors are:
 -Sebastian Thiel <byronimo _at_ gmail.com>
 -Jonathan Chu <jonathan.chu _at_ me.com>
 -Vincent Driessen <me _at_ nvie.com>
+-Phil Elson <pelson _dot_ pub _at_ gmail.com>
 
 Portions derived from other open source works and are clearly marked.

git/remote.py

@@ -511,7 +511,6 @@ def refs(self):
             remote.refs.master # yields RemoteReference('/refs/remotes/origin/master')"""
         out_refs = IterableList(RemoteReference._id_attribute_, "%s/" % self.name)
         out_refs.extend(RemoteReference.list_items(self.repo, remote=self.name))
-        assert out_refs, "Remote %s did not have any references" % self.name
         return out_refs
 
     @property