Update README.md

Author: witold-swierzy

data-platform/core-converged-db/Java_API_for_Property_Graphs/README.md

@@ -1,4 +1,4 @@
-property graph demo
+# Property Graph demo
 this code demonstrates:
    1. integration of Property Graph with SQL in Oracle Database 23c
    2. Java API for Property Graph Server
@@ -10,3 +10,11 @@ Requirements:
    2. Database user account ( <username> ) with the privileges described in the mentioned LiveLabs Workshop
    3. Tables used in this workshop created in the mentioned schema
    4. Oracle Property Graph Server installation using user account
+
+# License
+
+Copyright (c) 2024 Oracle and/or its affiliates.
+
+Licensed under the Universal Permissive License (UPL), Version 1.0.
+
+See [LICENSE](https://github.com/oracle-devrel/technology-engineering/blob/main/LICENSE) for more details.