added method to verify the TwiML application
added method to verify the TwiML application

theryankennedy/twilio-contact-center,nash-md/twilio-contact-center,sstewartsams/samsim,nash-md/twilio-contact-center,VijayendraM/clone001,VijayendraM/clone001,sstewartsams/samsim,jlyman/twilio-contact-center,theryankennedy/twilio-contact-center,jlyman/twilio-contact-center