chore: readme

README.md

@@ -1,5 +1,19 @@
 # room-rs
 
+ENV:
+```
+PASS=pass ./target/debug/room-rs
+```
+
+Slash commands:
+* /exit - close current websocket
+* /statics - show statics
+* /pass <pass> - set pass
+* /rooms - show rooms
+* /room <room id> - show room clients
+* /version - show version\[admin]
+* /time - show time
+
 # Message format
 
 Enter room: