Fix templates directory structure to produce correct nupkg output

templates/Microsoft.DotNet.Web.Spa.ProjectTemplates/react/ClientApp/boot.tsx

@@ -0,0 +1,30 @@
+import './css/site.css';
+import 'bootstrap';
+import * as React from 'react';
+import * as ReactDOM from 'react-dom';
+import { AppContainer } from 'react-hot-loader';
+import { BrowserRouter } from 'react-router-dom';
+import * as RoutesModule from './routes';
+let routes = RoutesModule.routes;
+
+function renderApp() {
+    // This code starts up the React app when it runs in a browser. It sets up the routing
+    // configuration and injects the app into a DOM element.
+    const baseUrl = document.getElementsByTagName('base')[0].getAttribute('href')!;
+    ReactDOM.render(
+        <AppContainer>
+            <BrowserRouter children={ routes } basename={ baseUrl } />
+        </AppContainer>,
+        document.getElementById('react-app')
+    );
+}
+
+renderApp();
+
+// Allow Hot Module Replacement
+if (module.hot) {
+    module.hot.accept('./routes', () => {
+        routes = require<typeof RoutesModule>('./routes').routes;
+        renderApp();
+    });
+}