send-sms-twilio.rb

require 'twilio-ruby'

class ShortMessageService
  ACCOUNT_SID = 'xxxxxxxxxxxxxxxxxxxxxxxxx'
  AUTH_TOKEN = 'xxxxxxxxxxxxxx'
  FROM = '+xxxxxxxxx'

  def self.send_short_message(to, body)
    client = Twilio::REST::Client.new ACCOUNT_SID, AUTH_TOKEN
    client.account.messages.create({
      from: FROM,
      to: to,
      body: body
    })
  end
end

ShortMessageService.send_short_message("+xxxxxxxxx", "Hello by twilio")