Updated dial in instructions

Hi all,
I added the detailed SIP connection instructions here:
https://github.com/w3c-ccg/w3c-ccg.github.io/blob/master/connecting.md

I updated the home page to (hopefully) make this info easier to discover.
https://w3c-ccg.github.io

Let me know if you have any suggestions.

Thanks,
Kim
-- 
Kim Hamilton Duffy
Principal Engineer | Learning Machine + MIT Media Lab
Co-chair W3C Credentials Community Group
400 Main Street Building E19-732, Cambridge, MA 02139
12001 N. Central Expy, Suite 1025, Dallas, TX 75243

kim@learningmachine.com | kimhd@mit.edu
425-652-0150 | LearningMachine.com