Configure Telegram in able to receive notification

This bot supports pushing notification via Telegram, this is how to do it

1. Register a Telegram account (if you don't have it)
2. Talk to Bot Father as described here and follow a few simple steps. Once you've created a bot and received your authorization token (for example 9999999999:XXXXXXXXXXX-XXXXXXXXXXXXXXXXXXXXXXX), fill it into the telegram.token key on user-config.properties file. For example: telegram.token=9999999999:XXXXXXXXXXX-XXXXXXXXXXXXXXXXXXXXXXX
3. Create a private Telegram channel, find the channel id. Here is a stackoverflow topic about it. One found it, fill it into telegram.channel-id key on user-config.properties.
4. Save change