Condense ABM registration, update readme

README.md

@@ -4,6 +4,6 @@ Once you place a flower on top of a flowerbed, it will quickly grow in nearby em
 
 This growing is not limited by the usual restriction of flora density, so a single flower planted in a large flowerbed field will eventually fill the entire field with the flower.
 
-In order to grow new flowers, flowerbeds must be on the same vertical height, and adjecent - even diagonally - to each other.
+In order to grow new flowers, flowerbeds must be on the same vertical height, and adjecent - even diagonally - to each other. Flowerbeds also do not work at all at depths of -50 or deeper.
 
 Flowerbeds are crafted from 1 coal, 1 dirt and 1 wood placed vertically. Different woods yields different looking flowerbeds, but they all share the same functionality and can work with each other.

init.lua

@@ -66,16 +66,15 @@ for _, data in pairs(baseMatsAndTextures) do
 			{data[1]}
 		}
 	})
+end
 
-	minetest.register_abm({
-		label = "ABM for "..name,
-		nodenames = {name},
-		neighbors = {"air"},
-		interval = 11.0,
-		chance = 40,
-		min_y = -50,
-		catch_up = true,
-		action = basic_flowerbed_abm
-	})
-
-end
+minetest.register_abm({
+	label = "ABM for Flowerbeds",
+	nodenames = {"group:flowerbed"},
+	neighbors = {"air"},
+	interval = 11.0,
+	chance = 40,
+	min_y = -50,
+	catch_up = true,
+	action = basic_flowerbed_abm
+})