Add SMS support

Summary:
Provides a working SMS implementation with support for Twilio.

This version doesn't really retry if we get any gruff at all. Future versions should retry.

Test Plan: used bin/sms to send messages and look at them.

Reviewers: chad, epriestley

Reviewed By: epriestley

Subscribers: aurelijus, epriestley, Korvin

Maniphest Tasks: T920

Differential Revision: https://secure.phabricator.com/D8930

externals/twilio-php/Services/Twilio/Rest/Domain.php

@@ -0,0 +1,70 @@
+<?php
+
+/**
+ * A single Domain
+ *
+ * .. php:attr:: date_created
+ *
+ *    The date the domain was created
+ *
+ * .. php:attr:: date_updated
+ *
+ *    The date the domain was updated
+ *
+ * .. php:attr:: sid
+ *
+ *    A 34 character string that identifies this object
+ *
+ * .. php:attr:: account_sid
+ *
+ *    The account that created the domain
+ *
+ * .. php:attr:: friendly_name
+ *
+ *    The friendly name of the domain
+ *
+ * .. php:attr:: domain_name
+ *
+ *    The *.sip.twilio domain for the domain
+ *
+ * .. php:attr:: auth_type
+ *
+ *    The auth type used for the domain
+ *
+ * .. php:attr:: voice_url
+ *
+ *    The voice url for the domain
+ *
+ * .. php:attr:: voice_fallback_url
+ *
+ *    The voice fallback url for the domain
+ *
+ * .. php:attr:: voice_fallback_method
+ *
+ *    The voice fallback method for the domain
+ *
+ * .. php:attr:: voice_status_callback_url
+ *
+ *    The voice status callback url for the domain
+ *
+ * .. php:attr:: voice_status_callback_method
+ *
+ *    The voice status_callback_method for the domain
+ *
+ * .. php:attr:: uri
+ *
+ *    The uri of the domain
+ *
+ * .. php:attr:: subresource_uris
+ *
+ *    The subresources associated with this domain (IpAccessControlListMappings, CredentialListMappings)
+ *
+ */
+class Services_Twilio_Rest_Domain extends Services_Twilio_InstanceResource {
+    protected function init($client, $uri) {
+        $this->setupSubresources(
+            'ip_access_control_list_mappings',
+            'credential_list_mappings'
+        );
+    }
+}