Cleanup and file reorganization

js/components/HeroHeadline.js

@@ -0,0 +1,10 @@
+import React from 'react';
+
+export default function({ children, alt }) {
+  return (
+    <div className="hero-headline">
+      {children}
+      <span className="hero-headline__alt"> {alt}</span>
+    </div>
+  );
+}