Update README.md

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Author: zkaoudi

wayang-api/wayang-api-scala-java/README.md

@@ -1,3 +1,22 @@
+<!--
+  - Licensed to the Apache Software Foundation (ASF) under one
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+
 # Wayang scala-java API
 
 Wayang provides two options for performing multiple asynchronous tasks - `async` API and `multicontext` API. 
@@ -361,4 +380,4 @@ The rest of the execution
       .execute()
 ```
 
-continues as a multi context job. 
+continues as a multi context job.