Gamepad: upgrade

• vibration on init so signal that the robot is up and running (used for autostart)

( Old version of this merge request: !323 (merged) . The old changes were reverted when merging !327 (merged) )

source/RobotAPI/drivers/GamepadUnit/GamepadUnit.h

@@ -53,7 +53,7 @@ namespace armarx
             //defineOptionalProperty<std::string>("PropertyName", "DefaultValue", "Description");
             defineOptionalProperty<std::string>("GamepadTopicName", "GamepadValues", "Name of the Gamepad Topic");
             defineOptionalProperty<std::string>("GamepadDeviceName", "/dev/input/js2", "device that will be opened as a gamepad");
-            defineOptionalProperty<std::string>("GamepadForceFeedbackName", "", "device that will be used for force feedback, leave empty to disable");
+            defineOptionalProperty<std::string>("GamepadForceFeedbackName", "", "device that will be used for force feedback, leave empty to disable. See RobotAPI/source/RobotAPI/drivers/GamepadUnit/README.md for more details.");
             defineOptionalProperty<int>("PublishTimeout", 2000, "In Milliseconds. Timeout after which the gamepad data is not published after, if no new data was read from the gamepad");
         }
     };