1) Verified breaking changes on Facebook API by creating a dummy app on face book's developer site.
2) Added events in dummy Facebook accounts to verify the access token migration issue, but seems to be new events are not returned from the backend.
3) Reverted AddNormalUser service from AddNormalUserv2
4) Verified the usage of feed dialog using facebook SDK v3.1 and Created a feed dialog to post a message on Facebook wall.
5) Handled negative cases of feed dialogue like if the user cancelled the posting of a message.