Slides from recent events

Hi all,

As promised here are the slides from the recent events we held in SF,
Singapore and Tokyo.
(These are the slides from Tokyo, the last event, as we make a few tweaks
and improvements as we went along)

Thanks again to all who attended.

There are references in the slides to most of the code that was
demonstrated.

The Web Payments code is at:
https://github.com/adrianhopebailie/payment-request-show

Adrian