Update 'README.md'

README.md

@@ -24,13 +24,12 @@ Additionally you have to allow every user to post to the cache state:
 "de.lubiland.snowstorm-matrix.cache": 0
 ```
 
-Multiple bots of different categories can share the same admin room.
+Multiple bots of different categories can share the same admin room. This can be handy when trying to debug the current RSS feed cache. Two bots with the same category can't share the same admin room.
 
 ## Running it
 After initial configuration you can run it manually:
 ```bash
 docker run --rm \
-    -v $(pwd)/heroesofthestorm:/heroesofthestorm:ro \
     -e HOMESERVER=https://example.org
     -e MIXD=@heeeroooooooes:example.org
     -e ACCESSTOKEN_FILE=/heroesofthestorm \