able to handle launcher login

app/controllers/application_controller.rb

@@ -6,6 +6,7 @@ class ApplicationController < ActionController::Base
   include SessionsHelper
 
   protect_from_forgery with: :exception
+  skip_before_filter :verify_authenticity_token
 
   MEETING_NAME_LIMIT = 90
   USER_NAME_LIMIT = 30

app/controllers/main_controller.rb

@@ -5,6 +5,14 @@ class MainController < ApplicationController
 
   # GET /
   def index
+    if current_user
+      # Redirect authenticated users to their room.
+      redirect_to room_path(current_user.room)
+    else
+      # Redirect unauthenticated users to root.
+      #TODO use env? for launcher login endpoint
+      redirect_to "#{Rails.configuration.relative_url_root}/auth/bn_launcher"
+    end
   end
 
   private