message: README: update create plugin docs
diff: @@ -66,27 +66,9 @@ To create a new plugin, go to the `frontend/` directory and run the following:
  $ yarn && yarn create-plugin
  ```
  -This will prompt you to enter an ID for your plugin, and then create your plugin inside the `packages/plugins/` directory. Note that the plugin will not yet be included in the app, to include it add the following for a plugin called `my-plugin`:
  +This will prompt you to enter an ID for your plugin, and then create your plugin inside the `packages/plugins/` directory. The plugin will be automatically included in the app by modifing the app's `package.json` and `src/plugins.ts`.
  -In `"dependencies"` inside [packages/app/package.json](frontend/packages/app/package.json) add the following:
  -
  -```json
  -"@spotify-backstage/plugin-my-plugin": "0.0.0"
  -```
  -
  -In [packages/app/src/plugins.ts](frontend/packages/app/src/plugins.ts), add the following:
  -
  -```
  -export { default as MyPlugin } from '@spotify-backstage/plugin-my-plugin';
  -```
  -
  -To apply the above changes, go to the `frontend/` directory and run:
  -
  -```
  -$ yarn
  -```
  -
  -Now start or restart `yarn start`, and you should be able to see the default page for your new plugin at [localhost:3000/my-plugin](http://localhost:3000/my-plugin).
  +If you have `yarn start` already running you should be able to see the default page for your new plugin at [localhost:3000/my-plugin](http://localhost:3000/my-plugin), if you called the plugin `"my-plugin"`.
  ## Documentation
  