Run an activerecord migration programmatically from irb

gistfile1.txt

irb(main):013:0* class AddStateToIncomingEmails < ActiveRecord::Migration
irb(main):014:1>   def up
irb(main):015:2>     add_column :incoming_emails, :state, :string
irb(main):016:2>   end
irb(main):017:1> 
irb(main):018:1*   def down
irb(main):019:2>   end
irb(main):020:1> end
=> nil
irb(main):021:0> AddStateToIncomingEmails.migrate(:up)
==  AddStateToIncomingEmails: migrating =======================================
-- add_column(:incoming_emails, :state, :string)
   (670.8ms)  ALTER TABLE `incoming_emails` ADD `state` varchar(255)
   -> 0.6715s
==  AddStateToIncomingEmails: migrated (0.6716s) ==============================