Update xs_sdk motor configs template (#50)

interbotix_ros_xseries/interbotix_xs_sdk/config/motor_configs_template.yaml

@@ -39,6 +39,9 @@ joint_state_publisher:
  update_rate: 100 # Optional; rate at which the motor states are sampled (and potentially published) in Hz; defaults to '100'
  publish_states: true # Optional; boolean that either enables or disables the Publisher; defaults to 'true'
  topic_name: joint_states # Optional; desired JointState topic name; defaults to 'joint_states'
+ read_failure_behavior: 0 # Optional; the behavior on joint state read failures; defaults to 0
+ # 0: Publishes whatever is given from the dxl_wb for all joints states (-pi)
+ # 1: Publishes NaN values for all joints
 
 groups: # Optional; defines an unlimited number of joint groups in the robot; custom 'group' names can be used.
  arm: [waist, shoulder, elbow, wrist_angle, wrist_rotate] # Optional; groups can contain overlapping joints but those joints will retain the operating mode of the latter group.