images, boxes, ellipses, lines

ReadMe.md

@@ -23,7 +23,12 @@ labels. An array called `color` will set the color via 0 to 1 RGBA values.
 Added `areas` which are exactly like nodes except that they always draw a white
 label and can have a custom radius specified. Drawn between edges and nodes.
 Use transparency. 25% works well.
-- TODO Options: box instead of circle, line instead of fill, ovals
+- `box` can be an array of width/height to draw a rectangular shape instead
+- `radius` can be an array of x/z radii to draw an ellipse instead of a circle
+- `mode` can be "line" to draw an outline instead of filling
+- `image` can be a file path, in which case `size` must be an array of desired
+  width/height
+  - (path relative to the JSON file? or relative to the executable?)
 
 ## Example JSON