Fix broken migration

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

db/migrate/20160222153918_create_appearances_ce.rb

-class CreateAppearancesCE < ActiveRecord::Migration
+class CreateAppearancesCe < ActiveRecord::Migration
   def change
     unless table_exists?(:appearances)
       create_table :appearances do |t|