Mention `--collector.disable-defaults` in the README
Took me ages to find this thing since there's literally nearly 100 other options that look almost the same.
some other person wants this as well. :)
@@ -81,6 +81,7 @@ below list all existing collectors and the supported systems.
Collectors are enabled by providing a `--collector.<name>` flag.
Collectors that are enabled by default can be disabled by providing a `--no-collector.<name>` flag.
+To enable only some specific collector(s), use `--collector.disable-defaults --collector.<name> ...`.
### Enabled by default
