Updated Web Payments Working Group Charter

Hi all,

Based on discussion today [1] I have updated:

 Web Payments Working Group Charter
 http://www.w3.org/2015/06/payments-wg-charter.html

Here’s a diff from the version available three days ago:
 http://www.w3.org/2015/07/wpay-diff.html

GitHub history:
 https://github.com/w3c/webpayments-ig/commits/master/latest/charters/payments-wg-charter.html

Ian

[1] https://www.w3.org/2015/07/20-wpay-minutes

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Ian Jacobs <ij@w3.org>      http://www.w3.org/People/Jacobs
Tel:                       +1 718 260 9447