integrate ugoiras into zip+webm+preview

db/migrate/20141009231234_create_pixiv_ugoira_frame_data.rb

@@ -0,0 +1,11 @@
+class CreatePixivUgoiraFrameData < ActiveRecord::Migration
+  def change
+    create_table :pixiv_ugoira_frame_data do |t|
+      t.integer :post_id
+      t.text :data
+      t.timestamps
+    end
+
+    add_index :pixiv_ugoira_frame_data, :post_id, :unique => true
+  end
+end