Added install rules for plugin.xml
Merge pull request #50 from ros-controls/plugin_xml_install

Added install rules for plugin.xml
Updated changelogs
0.5.4
Add images used in the ROS wiki doc.
Add basic description in package.xml.
Rename hold_trajectory_duration

- hold_trajectory_duration -> stop_trajectory_duration for more clarity.

- During Hydro, hold_trajectory_duration will still work, giving a deprecation
  warning.
Merge branch 'hydro-devel' of https://github.com/willowgarage/ros_controllers into hydro-devel
Update README.md

Factor out user documentation to the ROS wiki.
Image update.
Add self as ros_controllers maintainer.
Merge branch 'hydro-devel' of https://github.com/willowgarage/ros_controllers into hydro-devel
Added new has_velocity flag that indiciates if a target velocity has been set
Merge pull request #54 from davetcoleman/effort_position_controller_fix

Added new has_velocity flag that indiciates if a target velocity has been set
added wheel separation and radius params
take wheel radius from wheel link cylinder radius + cleanup
put static functions out of the class
Merge pull request #6 from efernandez/diff-drive-stuff

* Add calibration odometry parameters for diff_drive
* Change the way these parameters are obtained from the URDF
fix member constructors ordering
Merge pull request #7 from efernandez/member_constructor_ordering

fix member constructors ordering