Adding failover snippet to messages examples (#117)

Author: superchilled

messages/send-message-with-failover.rb

@@ -0,0 +1,31 @@
+require 'dotenv/load'
+require 'vonage'
+
+VONAGE_APPLICATION_ID = ENV['VONAGE_APPLICATION_ID']
+VONAGE_PRIVATE_KEY = ENV['VONAGE_PRIVATE_KEY']
+RCS_SENDER_ID = ENV['RCS_SENDER_ID']
+SMS_SENDER_ID = ENV['SMS_SENDER_ID']
+MESSAGES_TO_NUMBER = ENV['MESSAGES_TO_NUMBER']
+
+client = Vonage::Client.new(
+  application_id: VONAGE_APPLICATION_ID,
+  private_key: VONAGE_PRIVATE_KEY
+)
+
+rcs_message = client.messaging.rcs(
+  to: MESSAGES_TO_NUMBER,
+  from: RCS_SENDER_ID,
+  type: 'text',
+  message: 'This is an RCS text message sent via the Vonage Messages API'
+)
+
+sms_message = client.messaging.sms(
+    to: MESSAGES_TO_NUMBER,
+    from: SMS_SENDER_ID,
+    message: 'This is a failover SMS message in case the RCS message is rejected.'
+  )
+
+client.messaging.send(
+  **rcs_message,
+  failover: [sms_message]
+)