controllers with rspec3 syntax

spec/controllers/draft_controller_spec.rb

@@ -3,20 +3,20 @@ require 'spec_helper'
 describe DraftController do
 
   it 'requires you to be logged in' do
-    lambda { post :update }.should raise_error(Discourse::NotLoggedIn)
+    expect { post :update }.to raise_error(Discourse::NotLoggedIn)
   end
 
   it 'saves a draft on update' do
     user = log_in
     post :update, draft_key: 'xyz', data: 'my data', sequence: 0
-    Draft.get(user, 'xyz', 0).should == 'my data'
+    expect(Draft.get(user, 'xyz', 0)).to eq('my data')
   end
 
   it 'destroys drafts when required' do
     user = log_in
     Draft.set(user, 'xxx', 0, 'hi')
     delete :destroy, draft_key: 'xxx', sequence: 0
-    Draft.get(user, 'xxx', 0).should == nil
+    expect(Draft.get(user, 'xxx', 0)).to eq(nil)
   end
 
 end