message: Make note of vim.visualstar in README.md
diff: @@ -180,6 +180,10 @@ These settings are specific to VSCodeVim.
  }
  ```
  +#### `"vim.visualstar"`
  +* When pressing `*` or `#` in visual mode treat it as a new search
  +* Type: Boolean (Default: `false`)
  +
  ### Key remapping
  There's several different settings you can use to define custom remappings. Also related are the [`useCtrlKeys`](#vimusectrlkeys) and [`handleKeys`](#vimhandlekeys) settings.
  