Update factory girl to last version

spec/controllers/application_controller_spec.rb

@@ -1,7 +1,7 @@
 require 'spec_helper'
 
 describe ApplicationController do
-  let(:user) { Factory.create(:user) }
+  let(:user) { FactoryGirl.create(:user) }
 
   describe '#current_user=' do
     it 'stores the user id in the session as :user_id' do