Why do you have two CompletableFuture examples for challenge 1?

[TexasFred]

Hi there,

I just discovered your repo. You've got interesting stuff there! Congrats!!!

While reading the examples I found two examples for challenge 1 using Java and CompletableFuture

https://github.com/ReactiveMeetupLucerne/AsyncNonBlockingExamplesJVM/blob/master/src/main/java/challenge1/java8/CompletableFutureExample.java

and

https://github.com/ReactiveMeetupLucerne/AsyncNonBlockingExamplesJVM/blob/master/src/main/java/challenge1/java8/GmoCompletableFutureDemo.java

Why do you have two examples? The first one seems a bit non-idomatic regarding collecting the prices in a synchronized method, this smells like "shared mutual state"...

What do you think?

Best regards,
Fred