README.md in ruboty-slack_rtm-1.1.0 vs README.md in ruboty-slack_rtm-1.2.0

@@ -10,16 +10,14 @@
 gem 'ruboty-slack_rtm'
 ```
 
 ## ENV
 
-```
-SLACK_TOKEN - Account's token. get one on https://api.slack.com/web#basics
-```
+- `SLACK_TOKEN`: Account's token. get one on https://api.slack.com/web#basics
+- `SLACK_EXPOSE_CHANNEL_NAME_AS_FROM`: if this set to 1, `message.from` will be channel name instead of id (optional)
 
-Do not requires real user account. using with bot is recommended.
-
-see: https://api.slack.com/bot-users
+This adapter doesn't require a real user account. Using with bot integration's API token is recommended.
+See: https://api.slack.com/bot-users
 
 ## Contributing
 
 1. Fork it ( https://github.com/rosylilly/ruboty-slack_rtm/fork )
 2. Create your feature branch (`git checkout -b my-new-feature`)