Twitter OAuth Connector without API keys - New plugin from Pathfix

Can you tell me how I would use this plugin to tweet from the app’s Twitter account, rather than an individual user’s Twitter account?

i.e.when someone posts content to my app, I want my app Twitter account to tweet about it. So the app needs to be authenticated to one Twitter account (the app one) no matter who is using my app.

/edit - I have tried to do this by authenticating just one Admin user and then using that user’s unique id, instead of the current user’s id. That works for the authentication, but I have not got the tweeting to work yet. I again use the admin user’s unique id for the tweet action, but no joy yet.