message: use new name for wrist in example client app
diff: @@ -142,8 +142,8 @@ void mySkeletonCallback(void *userdata, const OSVR_TimeValue *timestamp, const O
  }
  OSVR_SkeletonJointCount leftWristJointId = 0;
  - rc = osvrClientGetSkeletonJointId(skel, "leftWrist", &leftWristJointId);
  - printf("\tasking for 'leftWrist' joint id by name: %s, jointId = %d\n",
  + rc = osvrClientGetSkeletonJointId(skel, "l_wrist", &leftWristJointId);
  + printf("\tasking for 'l_wrist' joint id by name: %s, jointId = %d\n",
  rc == OSVR_RETURN_SUCCESS ? "suceeded" : "failed", leftWristJointId);
  }
  }
  