refactored code

lib/cherrypick.dart

@@ -0,0 +1,19 @@
+///
+/// Copyright 2021 Sergey Penkovsky <sergey.penkovsky@gmail.com>
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///      http://www.apache.org/licenses/LICENSE-2.0
+/// Unless required by applicable law or agreed to in writing, software
+/// distributed under the License is distributed on an "AS IS" BASIS,
+/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+/// See the License for the specific language governing permissions and
+/// limitations under the License.
+///
+
+library cherrypick;
+
+export 'package:cherrypick/src/binding.dart';
+export 'package:cherrypick/src/helper.dart';
+export 'package:cherrypick/src/module.dart';
+export 'package:cherrypick/src/scope.dart';