Added 404 page

src/components/app.jsx

@@ -1,4 +1,12 @@
 import React from 'react';
+import { BrowserRouter, Switch, Route } from 'react-router-dom';
+
+//include pages
+import Home from './pages/home.jsx';
+import PageNotFound from './pages/page_not_found.jsx';
+
+//other stuff
+import Footer from './panels/footer.jsx';
 
 export default class App extends React.Component {
 	constructor(props) {
@@ -7,6 +15,16 @@ export default class App extends React.Component {
 	}
 
 	render() {
-		return <p>Hello world</p>;
+		return (
+			<div className = 'central'>
+				<BrowserRouter>
+					<Switch>
+						<Route exact path='/' component={Home} />
+						<Route path='*' component={PageNotFound} />
+					</Switch>
+				</BrowserRouter>
+				<Footer />
+			</div>
+		);
 	}
 }