Handle GUILD_ROLE_UPDATE websocket events.

discord/server.py

@@ -55,6 +55,9 @@ class Role(object):
     """
 
     def __init__(self, **kwargs):
+        self.update(**kwargs)
+
+    def update(self, **kwargs):
         self.id = kwargs.get('id')
         self.name = kwargs.get('name')
         self.permissions = Permissions(kwargs.get('permissions', 0))