add info to readme about team chat

liamcottle · liamcottle · commit fcec777c71f4 · 2020-06-14T01:34:48.000+12:00
diff --git a/README.md b/README.md
@@ -108,6 +108,8 @@ rustplus.turnSmartSwitchOn(1234567, (message) => {
 
 ### Send messages to Team Chat
 
+You need to be in a team before you can send messages to team chat.
+
 ```js
 rustplus.sendTeamMessage('message to team chat');
 ```
