Added install directions + changed some comments

Added an installation guide to the readme. Also changed some comments in
the lua file to be more straightforward.

README.md

@@ -4,3 +4,12 @@ A mod for Payday2 which notifies the player as to which meth ingredient is to be
 Mod will print the current required ingredient to the host of the mod (that's you) and nobody else. All messages from MethHelper will be preceeded by the tag "[MethHelper]".
 
 Works with Cookoff, Rats day 1, Hotline Miami day 1, and Dockyard.
+
+# How to install
+In order to install this mod, following the outlined steps below:
+
+1. Download the release from <a href="https://github.com/mluzarow/MethHelper/releases">releases</a>.
+2. Extract the contents of MethHelper.zip into a folder called "MethHelper".
+3. Navigate to your Payday 2 installation directory (usually this would be "C:/Program Files/steamapps/common/PAYDAY 2").
+4. Drop the "MethHelper" folder into the "mods" folder inside your Payday 2 install directory.
+5. You are done; your mod should be automatically detected and enabled within Payday 2.

lua/MethHelper.lua

@@ -1,6 +1,6 @@
--- Batch complete (Rats)
+-- Dialogue event codes
 local RatsFinishedID = "pln_rat_stage1_28"
-local RatsAddedID = "pln_rat_stage1_12" -- ???
+local RatsAddedID = "pln_rat_stage1_12"
 local CookoffFinishedID = "pln_rt1_28"
 local CookoffAddedID = "pln_rt1_12"
 
@@ -36,9 +36,11 @@ function clampCeiling (var, vMax)
 
 	return val
 
+-- Trigger this every time there is dialogue
 local _queue_dialog_orig = DialogManager.queue_dialog
 function DialogManager:queue_dialog(id, ...)
-	-- If dialogue code is found in dict
+
+    -- If dialogue code is found in dict
     if ingredient_dialog[id] then
 		-- If "batch finished" dialogue is played
 		if id == CookoffFinishedID or id == RatsFinishedID then