Added readFromNonRT() function, overloaded assignment and copy constructor, and made mutex mutable.
Added comments
initialize realtime_data_ and non_realtime_data_ before dereferencing and assigning to them in copy constructor
Merge pull request #2 from davetcoleman/master

Made member vars mutable in realtime buffer to allow const read
Merge remote-tracking branch 'origin/master' into hydro-devel
1.8.1
Add realtime action server goal handle.

- Factored out from PR2's implementation of the JointTrajectoryActionController.
Merge pull request #4 from pal-robotics/hydro-devel

Add realtime action server goal handle.
Append newline.
1.8.2
Renamed manifest.xml so it doesn't brek rosdep
Merge pull request #5 from ros-controls/no_manifest_xml

Renamed manifest.xml so it doesn't break rosdep
Added Travis support