Updated JSON API (markdown)

JSON-API.md

@@ -10,9 +10,13 @@ The response consists of four objects:
 - `info` contains general information about the device. No value can be modified using this API.
 - `effects` contains an array of the effect mode names
 - `palettes` contains an array of the palette names
+You may also obtain those objects individually using the URLs `/json/state` `/json/info` `/json/eff`, and ``/json/pal`
 
 ### Setting new values
-Sending a POST request to `/json/state` with (parts of) the state object will update the respective values.
+Sending a POST request to `/json` or `/json/state` with (parts of) the state object will update the respective values.
+Example: `{"on":true,"bri":255}` sets the brightness to maximum. `{"seg":[{"col":[[0,255,200]]}]}` sets the color of the first segment to teal.
+
+Note: In 0.8.4, segments are not supported and any but the first will be ignored.
 
 Sample JSON API response (v0.8.4):