Added ability to switch off publishing TF.
Merge branch 'hydro-devel' of https://github.com/ZdenekM/gazebo_ros_pkgs into hydro-devel
Source code formatting.
gazebo_ros_api_plugin: set plugin_loaded_ flag to true in
GazeboRosApiPlugin::Load() function
Merge pull request #65 from meyerj/fix_gazebo_ros_api_plugin_loaded_flag

gazebo_ros: GazeboRosApiPlugin is not properly unloaded during destruction
Merge pull request #53 from ZdenekM/hydro-devel

Minor improvement.
Merge branch 'hydro-devel' of https://github.com/ros-simulation/gazebo_ros_pkgs into hydro-devel