message: Update README to include basic flag.
diff: @@ -134,6 +134,8 @@ Run using `btm`.
  - `-C`, `--config` takes in a file path leading to a TOML file.
  +- `-b`, `--basic` will enable basic mode, removing all graphs from the main interface and condensing data.
  +
  ### Keybindings
  #### General
  