Fix templates directory structure to produce correct nupkg output

templates/Microsoft.DotNet.Web.Spa.ProjectTemplates/react/ClientApp/components/Layout.tsx

@@ -0,0 +1,21 @@
+import * as React from 'react';
+import { NavMenu } from './NavMenu';
+
+export interface LayoutProps {
+    children?: React.ReactNode;
+}
+
+export class Layout extends React.Component<LayoutProps, {}> {
+    public render() {
+        return <div className='container-fluid'>
+            <div className='row'>
+                <div className='col-sm-3'>
+                    <NavMenu />
+                </div>
+                <div className='col-sm-9'>
+                    { this.props.children }
+                </div>
+            </div>
+        </div>;
+    }
+}