Merge pull request #64 from rinaldifonseca/master

Added |t| to create_table block

railties/guides/source/3_1_release_notes.textile

@@ -315,7 +315,7 @@ end
 <ruby>
 class MyMigration < ActiveRecord::Migration
   def change
-    create_table(:horses) do
+    create_table(:horses) do |t|
       t.column :content, :text
       t.column :remind_at, :datetime
     end