Created NotFound component

src/common/NotFound.js

@@ -0,0 +1,15 @@
+import React from 'react';
+import { Link } from 'react-router-dom';
+
+const NotFound = () => (
+  <div className="home">
+    <h2>Oops! We could not find requested route.</h2>
+    <p>
+      Use your browser{'\''}s back button to navigate to the page you have previously come from, or just press this button.
+    </p>
+    <br />
+    <Link to="/" className="btn btn-outline-primary btn-lg">Home</Link>
+  </div>
+);
+
+export default NotFound;