Pointer Events editing process in the GitHub readme

Hey,
We've got some details on our work mode on the wiki
<https://www.w3.org/wiki/PointerEvents/WGCode>, but I figured we should
summarize how we're actually using GitHub from within GitHub itself.  In
particular, I've been having discussions at TPAC (including with plh@)
about shifting WG culture to see interoperability as the primary goal, and
document publication as primarily a means to that end. So I'd like to use
the PEWG as an example of a group who has an explicit policy around
testing.  I took a first cut at updating the README
<https://github.com/w3c/pointerevents/blob/gh-pages/README.markdown> to
reflect what we've been doing.  Any feedback?

Thanks,
  Rick