message: Add "uninstall" command to cargo --help
diff: @@ -65,6 +65,7 @@ Some common cargo commands are (see all commands with --list):
  search Search registry for crates
  publish Package and upload this project to the registry
  install Install a Rust binary
  + uninstall Uninstall a Rust binary
  See 'cargo help <command>' for more information on a specific command.
  ";
  