Merge pull request #1 from ros-simulation/hydro-devel

Merge from upstream
Remove unneeded dependency on pcl_ros

pcl_ros hasn't been released yet into indigo. I asked @wjwwood about
its status, and he pointed out that our dependency on pcl_ros
probably isn't necessary. Lo and behold, we removed it from the
header files, package.xml and CMakeLists.txt and gazebo_plugins
still compiles.
added osx support for gazebo start scripts
Merge pull request #188 from markusachtelik/hydro-devel

added osx support for gazebo start scripts
Add verbose parameter

Add verbose parameter for --verbose gazebo flag
hand_of_god: Adding hand-of-god plugin

ros_force: Fixing error messages to refer to the right plugin
HoG: adding install target
Merge pull request #139 from jbohren-forks/hand-of-god

Adding hand-of-god plugin
Merge pull request #190 from clynamen/patch-1

Add verbose parameter
Merge remote-tracking branch 'origin/hydro-devel' into indigo-devel