History of the group, credits, how to join, and brief guidelines.

I would like to include the history of 1.1 and 1.2 developments
as well, but did not have time for it this round.

Submitted by: Roy Fielding
Reviewed by: Jim Jagielski, Randy Terbush, Ken Coar


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@78215 13f79535-47bb-0310-9956-ffa450edef68