Adds sponsorship levels model

db/migrate/20140605055802_create_sponsorship_levels.rb

@@ -0,0 +1,10 @@
+class CreateSponsorshipLevels < ActiveRecord::Migration
+  def change
+    create_table :sponsorship_levels do |t|
+      t.string :title
+      t.string :donation_amount
+      t.belongs_to :conference
+      t.timestamps
+    end
+  end
+end