Update README.md (#5277)

README.md

@@ -17,6 +17,9 @@ The project is currently setup in two main branches:
 - `master` also known as `stable` - The bot 'should' be stable on this branch, and is generally well tested.
 
 ## Support
+### Development Channel
+[![Join the chat at https://gitter.im/pikabot-org/Lobby](https://badges.gitter.im/pikabot-org/db.svg)](https://gitter.im/pikabot-org/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
 ### Configuration issues/help
 If you need any help please don't create an issue as we have a great community on Slack. You can count on the community in [#help](https://pokemongo-bot.slack.com/messages/help/) channel.
  - [Click here to signup (first time only)](https://pokemongo-bot.herokuapp.com)