Added gazebo_version_helpers to linked libs in gazebo_grasp_plugin

gazebo_grasp_plugin/CMakeLists.txt

@@ -75,6 +75,7 @@ add_dependencies(gazebo_grasp_fix ${catkin_EXPORTED_TARGETS})
 ## Specify libraries to link a library or executable target against
 
 target_link_libraries(gazebo_grasp_fix 
+	${catkin_LIBRARIES} 
 	${GAZEBO_LIBRARIES} 
 	${Boost_LIBRARIES}
 )