doc/jsk_rviz_plugins/plugins/bounding_box_array.rst: add properties

doc/jsk_rviz_plugins/plugins/bounding_box_array.rst

@@ -7,3 +7,37 @@ What is this?
 Visualize ``jsk_recognition_msgs/BoundingBoxArray.msg``.
 
 .. image:: images/bounding_box_array.png
+
+Properties
+**********
+
+.. image:: images/bounding_box_array_rviz.gif
+
+
+- `Topic`
+
+  Name of topic of `jsk_recognition_msgs/BoundingBoxArray`
+
+- `coloring`
+
+  `Flat Color` applies the same color to all boxes. `Label` uses the
+  label value of each box for coloring, and `Value` applies the alpha
+  value from the box message.
+
+- `alpha method`
+
+  `flat` applies the same alpha value to all boxes. You can set this
+  value in the `alpha` field. `value` uses the box message data, and the
+  alpha can be scaled by setting the `alpha min` and `alpha max` fields.
+
+- `only edge`
+
+  If it is true, only the edges of the boxes will be displayed.
+
+- `show coords`
+
+  If it is true, the coordinates of the boxes will be displayed.
+
+- `value threshold`
+
+  Display only boxes with alpha value avobe this threshold.