fixed migration error

db/migrate/20170525004328_add_home_data_view_to_user.rb

 class AddHomeDataViewToUser < ActiveRecord::Migration[5.1]
 class AddHomeDataViewToUser < ActiveRecord::Migration[5.1]
   def change
   def change
-    add_column :users, :home_data_view_id, :number
+    add_column :users, :home_data_view_id, :integer
   end
   end
 end
 end

db/migrate/20170525005625_change_key_to_integer.rb

-class ChangeKeyToInteger < ActiveRecord::Migration[5.1]
-  def change
-    change_column :users, :home_data_view_id, :integer
-  end
-end