Add the new US meeting time to the User Guide Team yaml

This commit adds the meeting time, day, and start date for
the US meeting time.

1. Meeting time is '2200' in the yaml file

2. Start date is set for 20160211, which is the
   date of the first US meeting, and the date of
   the inital commit for this patch.

3. The proposed change allows the team to expand, and
   include two US based docs contributors:
   http://stackalytics.com/?module=documentation-group&user_id=stemke
   http://stackalytics.com/?module=documentation-group&user_id=gmolson

4. Agreement on the new meeting time was discussed briefly
   at the beginning of the first US Meeting:

   22:11:45 <JRobinson__> #action JRobinson__ to update the User Guide
            meeting times to reserve this earlier space
   22:11:51 <JRobinson__> There, fixed^
   22:11:58 <JRobinson__> gmolson, o/ hello!
   22:12:00 <gmolson> sweet!
   (complete minutes: http://eavesdrop.openstack.org/meetings/docsuserguides/2016/docsuserguides.2016-02-10-22.10.log.html)

5. A message to the Docs Mailing list has not recieved any objections:
   http://lists.openstack.org/pipermail/openstack-docs/2016-February/008283.html

6. The earlier time allows non-specialty team members to
   contribute toward meeting discussion. For example:
   22:22:29 <rocky_g> question:  There is work being done to
   generate each project's config options int RST via oslo.sphynx
   Is this something that would help here?

Change-Id: I9bb8c5bebeb949cc6d96b6076f988fa4e959586d

meetings/doc-user-guides-team-meeting.yaml

@@ -7,6 +7,12 @@ schedule:
     irc:        openstack-meeting-4
     frequency:  biweekly-even
     start_date: 20160113
+  - time:       '2200'
+    day:        Wednesday
+    irc:        openstack-meeting-4
+    frequency:  biweekly-even
+    start_date: 20160211
 chair: Joseph Robinson (JRobinson)
 description:  >
   The OpenStack User Guides team holds public meetings fortnightly on IRC.
+  The meeting at 2200 is followed by the meeting at 2330 on meeting days.