rename npm namespace from @spotify-backstage to @backstage

plugins/home-page/package.json

@@ -1,12 +1,12 @@
 {
-  "name": "@spotify-backstage/plugin-home-page",
+  "name": "@backstage/plugin-home-page",
   "version": "0.1.0",
   "main": "dist/cjs/index.js",
   "types": "dist/cjs/index.d.ts",
   "private": true,
   "devDependencies": {
-    "@spotify-backstage/cli": "^0.1.0",
-    "@spotify-backstage/core": "^0.1.0",
+    "@backstage/cli": "^0.1.0",
+    "@backstage/core": "^0.1.0",
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.3.2",
     "@testing-library/user-event": "^7.1.2",

plugins/home-page/src/components/HomePage/HomePage.test.tsx

@@ -18,7 +18,7 @@ import React from 'react';
 import { render } from '@testing-library/react';
 import HomePage from './HomePage';
 import { ThemeProvider } from '@material-ui/core';
-import { BackstageTheme } from '@spotify-backstage/core';
+import { BackstageTheme } from '@backstage/core';
 
 describe('HomePage', () => {
   it('should render', () => {

plugins/home-page/src/components/HomePage/HomePage.tsx

@@ -17,13 +17,7 @@
 import React, { FC } from 'react';
 import { Typography, Link, Grid } from '@material-ui/core';
 import HomePageTimer from '../HomepageTimer';
-import {
-  Content,
-  InfoCard,
-  Header,
-  Page,
-  pageTheme,
-} from '@spotify-backstage/core';
+import { Content, InfoCard, Header, Page, pageTheme } from '@backstage/core';
 import SquadTechHealth from './SquadTechHealth';
 import Table from '@material-ui/core/Table';
 import TableBody from '@material-ui/core/TableBody';

plugins/home-page/src/components/HomePage/SquadTechHealth.tsx

@@ -17,7 +17,7 @@
 import React, { FC } from 'react';
 import { Grid, Typography } from '@material-ui/core';
 
-import { HorizontalScrollGrid, ProgressCard } from '@spotify-backstage/core';
+import { HorizontalScrollGrid, ProgressCard } from '@backstage/core';
 
 const SquadTechHealth: FC<{}> = () => {
   return (

plugins/home-page/src/components/HomepageTimer/HomepageTimer.tsx

@@ -15,7 +15,7 @@
  */
 
 import React, { FC } from 'react';
-import { HeaderLabel } from '@spotify-backstage/core';
+import { HeaderLabel } from '@backstage/core';
 
 const timeFormat = { hour: '2-digit', minute: '2-digit' };
 const utcOptions = { timeZone: 'UTC', ...timeFormat };

plugins/home-page/src/plugin.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { createPlugin } from '@spotify-backstage/core';
+import { createPlugin } from '@backstage/core';
 import HomePage from './components/HomePage';
 
 export default createPlugin({