add should rpush not lpush
robot.send_messages needs a Lita::Source not a Lita::User
properly clear owning_user_id when yield/kick; notify who you yielded to by name not id; use Lita::User.find_by_id instead of .new
ignore .ruby-version
Merge pull request #4 from vijaykramesh/vr_fix_totem_ordering_and_robot_notification

some serious bug-fixes