Update docs about platforms that support multiple replies

docs/API.md

@@ -56,7 +56,7 @@ If you reply with a string, the response will be packaged in a bot-specific form
 
 Individual bots support more complex responses, such as buttons, attachments and so on. You can send all those responses by replying with an object, instead of a string. In that case, _Claudia Bot Builder_ does not transform the response at all, and just passes it back to the sender. It's then your responsibility to ensure that the resulting object is in the correct format for the bot engine. Use `request.type` to discover the bot engine sending the requests.
 
-If you reply with an array multiple messages will be sent in sequence. Each array item can be text or already formatted object and it'll follow the same rules explained above. At the moment, this is supported for Facebook Messenger and GroupMe only.
+If you reply with an array multiple messages will be sent in sequence. Each array item can be text or already formatted object and it'll follow the same rules explained above. At the moment, this is supported for Facebook Messenger, GroupMe, Telegram, and Viber only.
 
 Additionally, _Claudia Bot Builder_ exports message generators for for generating more complex responses including buttons and attachments for Facebook and Slack and function for sending delayed/multiple replies.