fix up some specs

spec/models/conversation_spec.rb

@@ -22,9 +22,8 @@ describe Conversation do
 
   describe '#last_author' do
     it 'returns the last author to a conversation' do
-      time = Time.now
       cnv = Conversation.create(@create_hash)
-      Message.create(:author => @user2.person, :created_at => time + 1.second, :text => "last", :conversation_id => cnv.id)
+      Message.create(:author => @user2.person, :created_at => Time.now + 100, :text => "last", :conversation_id => cnv.id)
       cnv.reload.last_author.id.should == @user2.person.id
     end
   end

spec/models/jobs/publish_to_hub_spec.rb

@@ -3,6 +3,7 @@
 #   the COPYRIGHT file.
 
 require 'spec_helper'
+require 'lib/pubsubhubbub'
 
 describe Job::PublishToHub do
   describe '.perform' do