Added farming.conf setting file check

farming.conf_example

@@ -0,0 +1,27 @@
+
+--[[
+	Farming settings can be changed here and kept inside mod folder
+	even after the mod has been updated, or you can place inside
+	world folder for map specific settings.
+--]]
+
+-- true to enable crop/food in-game and on mapgen
+farming.carrot = true
+farming.potato = true
+farming.tomato = true
+farming.cucumber = true
+farming.corn = true
+farming.coffee = true
+farming.coffee = true
+farming.melon = true
+farming.sugar = true
+farming.pumpkin = true
+farming.cocoa = true
+farming.raspberry = true
+farming.blueberry = true
+farming.rhubarb = true
+farming.beans = true
+farming.grapes = true
+farming.barley = true
+farming.hemp = true
+farming.donuts = true