Added NOTICE file.

Author: DariuszDepta

NOTICE

@@ -0,0 +1,13 @@
+Copyright (c) 2021-2025 Confio GmbH
+
+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.

README.md

@@ -6,14 +6,14 @@
 A [serde-json] alternative for [CosmWasm] smart contracts.
 
 [serde-json]: https://crates.io/crates/serde_json
-[cosmwasm]: https://cosmwasm.com/
+[cosmwasm]: https://cosmwasm.com
+[notice-url]: NOTICE
 
 ## License
 
 Licensed under either of
 
-- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or
-  http://www.apache.org/licenses/LICENSE-2.0)
+- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) and [NOTICE][notice-url]
 - MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
 
 at your option.