BP #24 Provide Real-time access

I've modified BP #24 [1] based on Phil's guidance [2] and referring to the
earlier templates.  I won't make any more additions today, hopefully will
be back to it tomorrow morning.

Thanks,

Eric S.


References

[1] http://w3c.github.io/dwbp/bp.html#AccessRealTime
<http://w3c.github.io/dwbp/bp.html#BulkAccess>
[2] http://lists.w3.org/Archives/Public/public-dwbp-wg/2015Jan/0303.html