Swapped LICENSE file.

This is now using the apache 2 license. I also added the CCSDS Space
Packet Protocol document for easier referencing.

README.md

@@ -49,3 +49,19 @@ Library avoids panics where possible and returns Result<T, &str> for error handl
 
 ## References
 [SPP]: https://ccsds.org/wp-content/uploads/gravity_forms/5-448e85c647331d9cbaf66c096458bdd5/2025/01//133x0b2e2.pdf "CCSDS Space Packet Protocol PDF"
+
+
+---
+
+## Copyright & License
+
+Copyright 2025 CyberMages LLC
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this library 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