first draft at the hub sidekick
Merge branch 'hydro-devel' of https://github.com/robotics-in-concert/rocon_multimaster into hub_sidekick
minor updates for hub sidekick
added a WallRate class (same as rospy.Rate, but uses wall clock)
first draft of the hub sidekick is complete. closes #182. closes #183
fixed default ping frequency
fixed arguments provided to ping class in hub watcher thread
Merge pull request #196 from piyushk/hub_sidekick

First draft of the hub sidekick