add waiting time to let the robot move to initial position

src/SamplePickAndPlace.cpp

@@ -274,6 +274,9 @@ int main(int argc, char** argv)
     ros::init(argc, argv, "panda_arm_pick_place");
     ros::NodeHandle nh;
     ros::AsyncSpinner spinner(1);
+    ROS_ERROR("SLEEPING");
+    ros::WallDuration(30.0).sleep();
+    ROS_ERROR("WAKING UP");
     spinner.start();
 
     ros::WallDuration(1.0).sleep();