added dependencies in package.json

Author: kbindra

Hotel app/frontend/package.json

@@ -3,14 +3,14 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@material-ui/core": "^4.8.2",
+    "@material-ui/core": "^4.9.0",
     "@material-ui/icons": "^4.5.1",
     "material-table": "^1.54.2",
     "react": "^16.12.0",
     "react-dom": "^16.12.0",
     "react-qr-reader": "^2.2.1",
+    "react-router-dom": "^5.1.2",
     "react-scripts": "0.9.5",
-    "semantic-ui-react-form-validator": "^1.0.2"
   },
   "devDependencies": {},
   "scripts": {

Hotel app/frontend/src/components/Food.js

@@ -1,5 +1,5 @@
 import React, { Component } from "react";
-import MuiThemeProvider from "material-ui/styles/MuiThemeProvider";
+import { ThemeProvider as MuiThemeProvider } from '@material-ui/core/styles';
 import Table from "./Table";
 
 

Hotel app/frontend/src/components/Order.js

@@ -1,5 +1,5 @@
 import React, { useState,useEffect } from "react";
-import MuiThemeProvider from "material-ui/styles/MuiThemeProvider";
+import { ThemeProvider as MuiThemeProvider } from '@material-ui/core/styles';
 import Ordertable from "./Ordertable";