Update readme

mods/ENVIRONMENT/mcl_weather/README.md

@@ -1,7 +1,77 @@
 `mcl_weather`
 =======================
 This was largely rewritten to use particlespawners (what were you thinking !?) and an event based code flow.
--cora, 2021-09
+
+
+Weathers included
+-----------------------
+* rain
+* snow
+* thunder
+
+Commands
+-----------------------
+`weather <weather>`, requires `weather_manager` privilege.
+
+Dependencies
+-----------------------
+Lightning has been made a hard dependency since it is included in Mineclonia.
+
+Adding new weathers:
+
+It's as simple as calling a mcl_weather.register_weather(weatherdef):
+
+Weatherdef
+-----------------------
+{
+	light_factor = 1,
+    -- 0-1
+
+    cloudcolor=  ,
+    --hexrgb
+
+    sound,
+    --A sound name (loop)
+
+	min_duration ,
+    -- In seconds
+
+    max_duration ,
+	transitions,
+    --The chances how likely this weather is to change into another weather.
+    -- e.g.
+    -- {
+	--	[65] = "none",
+	--	[80] = "rain",
+	--	[100] = "thunder",
+	-- }
+
+	skylayer= ,
+    -- a skylayer defintion (see skycolor api)
+
+	particlespawners = {},
+    -- a table of particlespawnerdefinitions
+
+	start ,
+    --A function that is run when the weather is about to start
+
+	start_player,
+    --A function per player that is run when the weather is about to start
+	clear ,
+    --A function that is run when the weather is about to clear/change
+	clear_player ,  -- function per player that is run on change (first argument is the playername)
+
+    at_pos ,
+    --A function that is run for each player with current position as argument. weather is disabled for the player when it returns false
+
+    change_at_pos,
+    --function that is run for each player with current position as argument. return a weather name and the weather transitions into the supplied weather for that player
+
+    }
+
+
+
+This was the original README.md from mcl2_weather:
 
 Weather mod for MineClone 2. Forked from the `weather_pack` mod by xeranas.