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
diff_drive: odometry refactoring
diff_drive: fix unit test (bullet types)
diff_drive: fixed linking to urdf
fix heading normalization, using ROS angles lib + sort members constructors
Merge pull request #1 from efernandez/diff-drive-stuff

fix heading normalization, using ROS angles lib + sort members constructors
Merge pull request #4 from po1/diff-drive-stuff

Fixes and refactoring in diff_drive_controller