Add ability to display revisions

js/components/ItemRevisions.js

@@ -0,0 +1,17 @@
+import React from 'react';
+import HeadlineGroup from './HeadlineGroup';
+import ItemRevision from './ItemRevision';
+
+export default function ItemRevisions({ revisions }) {
+  return (
+    <div>
+      <HeadlineGroup secondary>
+        <h4 className="headline headline--dark">
+          Revisions:
+        </h4>
+      </HeadlineGroup>
+
+      {revisions.map((revision) => <ItemRevision key={revision.release} revision={revision} />)}
+    </div>
+  );
+}