Initial code drop

Author: b41ex

CONTRIBUTING copy.md

@@ -1 +1,13 @@
-Notice, that overridden functions have `apihub` prefix
+# Contribution Guide
+
+We'd love to accept patches and contributions to this project.
+Please, follow these guidelines to make the contribution process easy and effective for everyone involved.
+
+## Contributor License Agreement
+
+You must sign the [Contributor License Agreement](https://pages.netcracker.com/cla-main.html) in order to contribute.
+
+## Code of Conduct
+
+Please make sure to read and follow the [Code of Conduct](CODE-OF-CONDUCT.md).
+