Traffic Server doc web site is now updated from svn

[Andrew Hsu <an...@apache.org>]

The Traffic Server doc web site has not been updated in the past few 
days since the cron job was disabled by the admin:
http://incubator.apache.org/trafficserver/

I've modified the cron job so that it now executes according to the 
apache instructions:
http://www.apache.org/dev/project-site.html#intro

Which means my cron svn update has group read-write permissions for 
anybody else to go in and update by hand if need be in the future.

I have my cron job run every hour on the 5.  However, if you need to 
update manually, according to the admin of people.apache.org:

"When commits are made to the website, the user who made the commit then 
logs into people.apache.org and runs `umask 2; svn up` in the target 
directory.  Changes will get pushed live on an hourly basis."

Cheers,
Andrew