HBASE-8218 Pass HTable as parameter to methods of AggregationClient

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1482478 13f79535-47bb-0310-9956-ffa450edef68
Add link to birds of a feather session after hadoop summit

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1482542 13f79535-47bb-0310-9956-ffa450edef68