Microsoft has recently added Facebook messaging channel on Bot Connector. For connecting your Bot to Facebook via Page. That means Users can talk to your Bot using the Messaging Section of the Page. So, you need to create a Page or get the Page ID of existing Facebook Page. Usually it will be under Page Info of your Page Settings.
I am experimenting the API. Will share the sample App once I am done with it. This information is not shared in Bot Framework Blog nor shared anywhere. It is informed via emails for those who created Bots using Bot Framework earlier. So, thought to share it here.