update reference.conf

Author: jagrosh

src/main/resources/reference.conf

@@ -172,6 +172,19 @@ aliases {
   volume = [ vol ]
 }
 
+
+// Transforms are used to modify specific play inputs and convert them to different kinds of inputs
+// These are quite complicated to use, and have limited use-cases, but in theory allow for rough
+// whitelists or blacklists, roundabout loading from some sources, and customization of how things are
+// requested.
+//
+// These are NOT EASY to set up, so if you want to use these, you'll need to look through the code 
+// for how they work and what fields are needed. Also, it's possible this feature might get entirely
+// removed in the future if I find a better way to do this.
+
+transforms = {}
+
+
 // If you set this to true, it will enable the eval command for the bot owner. This command
 // allows the bot owner to run arbitrary code from the bot's account.
 //