Throw away the first two components, leaving the rest of the path as the branch "name"

github.js

diff --git a/github.js b/github.js
index cd1cf38..01c01db 100644
--- a/github.js
+++ b/github.js
@@ -199,7 +199,7 @@
       this.listBranches = function(cb) {
         _request("GET", repoPath + "/git/refs/heads", null, function(err, heads) {
           if (err) return cb(err);
-          cb(null, _.map(heads, function(head) { return _.last(head.ref.split('/')); }));
+          cb(null, _.map(heads, function(head) { return _.rest(head.ref.split('/'), 2).join('/'); }));
         });
       };