updated msg names

msg/analog_voltage.msg

@@ -0,0 +1,3 @@
+# Reports an analog voltage measurements.
+
+float64 voltage     # The measured analog voltage [v]

msg/AxisState.msg → msg/axis_state.msg

@@ -1,6 +1,7 @@
 # Reports the instantaneous state of an axis.
 
-Header header               # Includes a timestamp and frame ID for the measurement.
 float64 position            # The current position of the axis in radians.
 float64 velocity            # The current velocity of the axis in radians/second.
 float64 acceleration        # The current acceleration of the axis in radians/second^2.
+
+string frame_id             # The id of the measurement's frame.

msg/Proximity.msg → msg/proximity.msg

@@ -1,7 +1,5 @@
 # Reports the instantaneous measurement of a proximity sensor.
 
-Header header               # Includes a timestamp and frame ID for the measurement.
-
 # Radiation enumerations.
 uint8 UNSPECIFIED=255
 uint8 ULTRASOUND=0
@@ -14,4 +12,6 @@ float32 min_range           # The minimum detection range of the sensor [m]
 float32 max_range           # The maximum detection range of the sensor [m]
 float32 field_of_view       # The maximum FoV of the sensor [rad]
 
-bool proximity                  # Reports TRUE if proximity is detected, otherwise FALSE.
+bool proximity              # Reports TRUE if proximity is detected, otherwise FALSE.
+
+string frame_id             # The ID of the measurement frame.