doc: Update README.md

README.md

@@ -2,7 +2,13 @@
 
 Visualize vite bundle, like [webpack-bundle-analyzer](https://github.com/webpack-contrib/webpack-bundle-analyzer).
 
-Use [rollup-plugin-visualizer](https://github.com/btd/rollup-plugin-visualizer).
+A wrapper of  [rollup-plugin-visualizer](https://github.com/btd/rollup-plugin-visualizer).
+
+In most scenarios you shouldn't need this library, the recommended solution is to add
+`rollup-plugin-visualizer` directly to your vite configuration. However, if you are using
+vite, and want to run the visualizer directly from your command line via a CLI command
+instead without needing to build your site, now you have a solution with the
+`vite-bundle-visualizer`.
 
 ## Usage