Merge pull request #5353 from backstage/rugvip/plugins-docs

docs,READMEs: updates for composability changes

docs/features/kubernetes/installation.md

@@ -23,16 +23,8 @@ cd packages/app
 yarn add @backstage/plugin-kubernetes
 ```
 
-Once the package has been installed, you need to import the plugin in your app.
-Add the following to `packages/app/src/plugins.ts`:
-
-`plugins.ts`:
-
-```typescript
-export { plugin as Kubernetes } from '@backstage/plugin-kubernetes';
-```
-
-Now, add the "Kubernetes" tab to the catalog entity page. In
+Once the package has been installed, you need to import the plugin in your app
+by adding the "Kubernetes" tab to the catalog entity page. In
 `packages/app/src/components/catalog/EntityPage.tsx`, you'll add a router to get
 to the tab, and add the tab itself.
 

docs/features/software-catalog/installation.md

@@ -24,14 +24,8 @@ yarn add @backstage/plugin-catalog
 
 ### Adding the Plugin to your `packages/app`
 
-Add the following entry to the head of your `packages/app/src/plugins.ts`:
-
-```ts
-export { catalogPlugin } from '@backstage/plugin-catalog';
-```
-
-Next we need to install the two pages that the catalog plugin provides. You can
-choose any name for these routes, but we recommend the following:
+Add the two pages that the catalog plugin provides to your app. You can choose
+any name for these routes, but we recommend the following:
 
 ```tsx
 // packages/app/src/App.tsx

docs/features/software-templates/installation.md

@@ -26,14 +26,8 @@ yarn add @backstage/plugin-scaffolder
 
 ### Adding the Plugin to your `packages/app`
 
-Add the following entry to the head of your `packages/app/src/plugins.ts`:
-
-```ts
-export { scaffolderPlugin } from '@backstage/plugin-scaffolder';
-```
-
-Next we need to install the root page that the Scaffolder plugin provides. You
-can choose any path for the route, but we recommend the following:
+Add the root page that the Scaffolder plugin provides to your app. You can
+choose any path for the route, but we recommend the following:
 
 ```tsx
 import { ScaffolderPage } from '@backstage/plugin-scaffolder';

docs/features/techdocs/getting-started.md

@@ -29,14 +29,8 @@ yarn add @backstage/plugin-techdocs
 
 Once the package has been installed, you need to import the plugin in your app.
 
-Add the following to `packages/app/src/plugins.ts`:
-
-```typescript
-export { plugin as TechDocs } from '@backstage/plugin-techdocs';
-```
-
-Now we can add a route for the TechDocs page. In `packages/app/src/App.tsx`,
-import TechDocsPage and add the following to `FlatRoutes`:
+In `packages/app/src/App.tsx`, import `TechDocsPage` and add the following to
+`FlatRoutes`:
 
 ```tsx
 import { TechDocsPage } from '@backstage/plugin-techdocs';