Update the Cluecard readme files

keyboards/cluecard/keymaps/default/readme.md

@@ -1 +1,5 @@
 # The default keymap for cluecard
+
+Note that this keymap has audio enabled, so the RGB mode button does not go through the different effects. 
+So the LEDs will still show a static light, that is configurable with the hue, staturation and brightness
+buttons. You can of course also turn them on and off with the on/off button.

keyboards/cluecard/keymaps/rgb_effects/readme.md

@@ -1,3 +1,7 @@
 # RGB effect test keymap for cluecard
 
-This keymap has audio disabled, and the RGB mode button does not go through the different effects 
+This keymap is made for testing the RGB effects. Audio is disabled and the mode buttons goes through each
+effect. If you run HID-listen you will be able to see which effect is active. For a list of effects, check
+the `rgblight.c` file.
+
+The hue, saturation and brightness buttons will work depending on which effect is active.