class UpdateUser < ActiveRecord::Migration
  def change_table :users do |t|
    t.boolean :email_notify, null: false, default: true
    t.boolean :text_notify, null: false, default: false
    t.string  :cellphone, limit: 15,
  end
end

Add new fields to users table
Add new fields to users table

Add email_notify (default true) to indicate permission for email
notifications.
Add text_notify (default false) to indicate permission for text
notifications.
Add cellphone to hold contact number for text notifications.
