Fix MysqlAuthUser when number of results != 1, typo in README

cas_server/auth.py

@@ -83,7 +83,9 @@ class MysqlAuthUser(AuthUser):
         curs = conn.cursor()
         if curs.execute(settings.CAS_SQL_USER_QUERY, (username,)) == 1:
             self.user = curs.fetchone()
-        super(MysqlAuthUser, self).__init__(self.user['username'])
+            super(MysqlAuthUser, self).__init__(self.user['username'])
+        else:
+            super(MysqlAuthUser, self).__init__(username)
 
     def test_password(self, password):
         """test `password` agains the user"""