add copyright

README.md

@@ -102,3 +102,19 @@ While the `Zone` memory allocation API from Scala Native is very nice, it's not
 * allocate memory for requests
 * allocate memory for handles
 * allocate, use and free file system requests
+
+---
+
+Copyright 2024 Lachlan O'Dea
+
+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.