add brief description in readme.md and rename Broker class

Author: nsolov

README.md

@@ -1 +1,22 @@
-# TelegramAlerts
+# TelegramAlerts
+
+Telegram bot created to get Alerts from Ensemble on your mobile phone
+
+## Steps to add to your Ensemble Production
+
+1. Create your bot using BotFatner (https://telegram.me/BotFatner) and get a token
+2. Create client SSL configuration in Management Portal  
+3. Import classes (Telegram package)
+4. Create Lookup Table in your Ensemble namespace. Add one or more records. Use phone number (without "+" prefix) as a key.
+5. Add in your Production business operation TelegramOperation, in its settings, you must specify TelegramToken and SSLConfiguration
+
+For getting updates from Telegram do one of the following (6 or 7):
+6. Long polling. Add TelegramService business service to your Production and configure it. Specify TelegramToken, SSLConfiguration, TableName (Lookup table name). Set call interval.
+7. Webhook
+	* Create web application and Specify Dispatch Class parameter as Telegram.RESTBroker.cls
+	* Configure SSL on your Web server
+	* Call method SetWebhook of class Telegram.API to set webhook.
+	* Add TelegramService business service to your Production. Specify TableName (Lookup table name). Set "Pool Size"=0.
+	
+8. Add AlertOperation.cls with the name Ens.Alert to the product and configure TelegramToken, SSLConfiguration, TableName
+9. Done!

Telegram/Broker.cls renamed to Telegram/RESTBroker.cls

@@ -1,4 +1,4 @@
-Class REST.Broker Extends %CSP.REST
+Class Telegram.RESTBroker Extends %CSP.REST
 {
 XData UrlMap
 {