[Website] First pass at Algolia Doc Search

It’s not yet responsive :(

website/core/AlgoliaDocSearch.js

@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule AlgoliaDocSearch
+ */
+
+var AlgoliaDocSearch = React.createClass({
+  render: function() {
+    return (
+      <div className="algolia-search-wrapper">
+        <input id="algolia-doc-search" type="text" placeholder="Search docs..." />
+      </div>
+    );
+  }
+});
+
+module.exports = AlgoliaDocSearch;