* Add asio standalone example
* Mark VERSION explicitly
Without this version information, CPM's versioning mechanism may break
in some cases.
Also add comments for compile definition on Windows.
* Use aync-tcp-echo-server as the example
* Add boost software license to the demo source
Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com>
Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com>
