Last fix-ups

Author: destogl

README.md

@@ -88,7 +88,7 @@ The most relevant arguments are the following:
 
 - To test another controller, simply define it using `robot_controller` argument:
    ```
-   ros2 launch ur_bringup ur_control.launch.py ur_type:=ur5e robot_ip:=yyy.yyy.yyy.yyy robot_controller:=scaled_joint_trajectory_controller use_fake_hardware:=true
+   ros2 launch ur_bringup ur_control.launch.py ur_type:=ur5e robot_ip:=yyy.yyy.yyy.yyy robot_controller:=scaled_joint_trajectory_controller use_fake_hardware:=true launch_rviz:=true
    ```
    And send the command using demo node:
    ```

ur_controllers/src/scaled_joint_trajectory_controller.cpp

@@ -93,7 +93,7 @@ controller_interface::return_type ScaledJointTrajectoryController::update()
   resize_joint_trajectory_point(state_current, joint_num);
 
   // current state update
-  for (auto index = 0ul; index < joint_num; ++index)
+  for (size_t index = 0; index < joint_num; ++index)
   {
     state_current.positions[index] = joint_position_state_interface_[index].get().get_value();
     state_current.velocities[index] = joint_velocity_state_interface_[index].get().get_value();
@@ -131,7 +131,7 @@ controller_interface::return_type ScaledJointTrajectoryController::update()
       bool abort = false;
       bool outside_goal_tolerance = false;
       const bool before_last_point = end_segment_itr != (*traj_point_active_ptr_)->end();
-      for (auto index = 0ul; index < joint_num; ++index)
+      for (size_t index = 0; index < joint_num; ++index)
       {
         // set values for next hardware write()
         joint_position_command_interface_[index].get().set_value(state_desired.positions[index]);