0.7.7 play update (#47)

markdown/docs/webhooks/play.md

@@ -4,7 +4,10 @@ The play command is used to stream recorded audio to a call.
 ```json
 {
   "verb": "play",
-  "url": "https://example.com/example.mp3"
+  "url": "https://example.com/example.mp3",
+  "timeoutSecs": 10,
+  "seekOffset": 8000,
+  "actionHook": "/play/action"
 }
 ```
 
@@ -15,6 +18,19 @@ You can use the following options in the `play` action:
 | url | a single url or array of urls (will play in sequence) to a wav or mp3 file | yes |
 | loop | number of times to play the url(s) | no (default: 1) |
 | earlyMedia | if true and the call has not yet been answered, play the audio without answering call.  Defaults to false | no |
+| timeoutSecs | the number of seconds to play the url | no |
+| seekOffset | how many samples to seek into the url | no |
+| actionHook | webhook that is called when the play verb completes | no | 
+
+<h5 id="message-action-properties">actionHook properties</h5>
+
+The actionHook that is invoked when the `play` command completes will include the following properties:
+
+| property name  | description | 
+| ------------- |-------------|
+| playback_seconds | the number of seconds played |
+| playback_milliseconds | the number of milliseconds played |
+| playback_last_offset_pos | the last offset position in samples |
 
 <p class="flex">
 <a href="/docs/webhooks/pause">Prev: pause</a>