Add app component IsNiftyOpenApp

src/Components/IsNiftyOpenApp/App.tsx

@@ -0,0 +1,25 @@
+import * as React from 'react';
+import './App.css';
+import { OpenToday } from '../OpenToday';
+import { allHolidays } from '../../Data';
+
+const logo = require('./logo.svg');
+
+class IsNiftyOpenApp extends React.Component {
+  render() {
+    return (
+      <div className="App">
+        <header className="App-header">
+          <img src={logo} className="App-logo" alt="logo" />
+          <h1 className="App-title">Welcome to React</h1>
+        </header>
+        <p className="App-intro">
+          To get started, edit <code>src/App.tsx</code> and save to reload.
+        </p>
+        <OpenToday question={OpenToday.OpenOrClose.Open} allHolidays={allHolidays}/>
+      </div>
+    );
+  }
+}
+
+export { IsNiftyOpenApp };