Fix Dial TwiML bug

Author: jingming

lib/twiml/VoiceResponse.js

@@ -296,7 +296,7 @@ Gather.prototype.say = function(attributes, body) {
  * @param {string} url url of file to play
  */
 Gather.prototype.play = function(attributes, url) {
-  this.gather.play('Play', attributes, url);
+  this.gather.ele('Play', attributes, url);
 };
 
 /**
@@ -306,7 +306,7 @@ Gather.prototype.play = function(attributes, url) {
  * @param {number} [attributes.length] time in seconds to pause
  */
 Gather.prototype.pause = function(attributes) {
-  this.gather.pause('Pause', attributes);
+  this.gather.ele('Pause', attributes);
 };