hg: openjfx/9-dev/rt: 8163514: Add HelloDirectoryChooser toy.

[david.hill at oracle.com]

Changeset: 215dde1ab9d4
Author:    ddhill
Date:      2016-08-09 18:45 -0400
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/215dde1ab9d4

8163514: Add HelloDirectoryChooser toy.
Reviewed-by: ckyang

+ apps/toys/Hello/src/main/java/hello/HelloDirectoryChooser.java