From Qt 5.7 -> examples are lisenced under BSD license, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/


Updated license headers to use new BSD header

Change-Id: I12d6dd8ebeddf1c39e8aed5095fd224f5e0a455f
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>