Small updates to ReadMe to better match the current state of Greenlight (#612)

README.md

@@ -5,11 +5,9 @@
 !Status](https://coveralls.io/repos/github/bigbluebutton/greenlight/badge.svg?branch=master)
 ![Docker Pulls](https://img.shields.io/docker/pulls/bigbluebutton/greenlight.svg)
 
-> Greenlight is currently on version 2.0. If you are still running Greenlight 1.0 we suggest [upgrading to 2.0](http://docs.bigbluebutton.org/greenlight/gl-install.html#upgrading-from-greenlight-10).
-
 Greenlight is a simple front-end interface for your BigBlueButton server. At it's heart, Greenlight provides a minimalistic web-based application that allows users to:
 
-  * Signup/Login with Twitter, Google, or through the application itself.
+  * Signup/Login with Google, Office365, or through the application itself.
   * Manage your account settings and user preferences.
   * Create and manage your own personal rooms ([BigBlueButton](https://github.com/bigbluebutton/bigbluebutton) sessions).
   * Invite others to your room using a simple URL.