adding packages

deprecated/floating_search_bar/example/README.md

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+# floating_search_bar_example
+
+Demonstrates how to use the floating_search_bar plugin.
+
+``` dart
+import 'package:flutter/material.dart';
+
+import 'package:floating_search_bar/floating_search_bar.dart';
+
+void main() => runApp(MyApp());
+
+class MyApp extends StatefulWidget {
+  @override
+  _MyAppState createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      home: FloatingSearchBar.builder(
+        itemCount: 100,
+        itemBuilder: (BuildContext context, int index) {
+          return ListTile(
+            leading: Text(index.toString()),
+          );
+        },
+        trailing: CircleAvatar(
+          child: Text("RD"),
+        ),
+        drawer: Drawer(
+          child: Container(),
+        ),
+      ),
+    );
+  }
+}
+
+```