fix flask-openid import

main.py

@@ -3,7 +3,7 @@
 
 from flask import Flask, request, session, g, redirect, url_for, abort, \
     render_template, flash
-from flaskext.openid import OpenID
+from flask_openid import OpenID
 import sqlite3
 from datetime import date, time, timedelta, datetime
 import time