Fatal error when trying to configure twitter as a messaging method

Issue Summary

Hello everyone,

Thanks a lot for the wonderful module, it's really awesome.
I installed twitter 6.x-3.0-beta3 with OAuth 6.x-2.02 and configured them properly, I though it would a good idea to give my users another way of receiving update through twitter, I enabled Twitter Messaging but when I tried to configure my username and password for my twitter account and hit save configuration I had this error

Fatal error: Call to undefined function twitter_authenticate() in /home/mysite/public_html/sites/all/modules/messaging/messaging_twitter/messaging_twitter.module on line 165

I'm so sorry if somebody posted this bug before.

Thanks