link API to README

README.md

@@ -3,7 +3,7 @@ VanessaE's Unified Dyes
 
 The purpose of this mod originally was to supply a complete set of colors for Minetest mod authors to use for colorized nodes, or to reference in recipes. Since the advent of the default dyes mod in minetest_game, this mod has become more of an extension of the default mod.  Since the advent of param2 colorization, it has also become a library for general color handling.
 
-Unified Dyes expands the standard dye set from 15 colors to 32, 89, or 256 (see below).
+Unified Dyes expands the standard dye set from 15 colors to 32, 89, or 256 (see the API and usage info).
 
 Dependencies: Minetest engine version 0.4.16 or higher and a corresponding copy of minetest_game.
 
@@ -12,3 +12,5 @@ License: GPL 2.0 or higher.
 Install: Unzip the distribution file, rename the resultant folder to just "unifieddyes", move it into Minetest's mods folder, and enable it in your world configuration.
 
 Usage: for detailed usage information, please see [the Unified Dyes Thread](https://forum.minetest.net/viewtopic.php?f=11&t=2178&p=28399) on the Minetest forum.
+
+API: the full API is documented here: https://github.com/minetest-mods/unifieddyes/blob/master/API.md