Update README.md

Author: chyndman

README.md

@@ -16,9 +16,9 @@ Part of the Elixir on Windows Google Summer of Code 2014 project, this installer
 First, download the [Unicode Inno Setup QuickStart Pack](http://www.jrsoftware.org/isdl.php#qsp) and install it, making sure to keep the "Install Inno Setup Preprocessor" checkbox checked when asked.  Then, follow these steps to build an offline installer (a single executable which packages a particular Elixir release):
 
 1. Clone this repo (`elixir-windows-setup`) to your system.
-2. Download the Precompiled.zip of the desired [Elixir Release](https://github.com/elixir-lang/elixir/releases/) into `elixir-windows-setup`
-3. Open either a PowerShell in `elixir-windows-setup`.
-4. In the directory, run `.\scripts\make-installer.ps1`.
+2. Extract the Precompiled.zip of the desired [Elixir Release](https://github.com/elixir-lang/elixir/releases/) into `elixir-windows-setup\elixir`
+3. Open either a PowerShell or Command Prompt in `elixir-windows-setup`.
+4. In the directory, run `#INNOSETUPPATH#\ISCC.exe /dElixirVersion=#ELIXIRVERSION# Elixir.iss`, where `#INNOSETUPPATH#` is probably "C:\Program Files (x86)\Inno Setup 5" and `#ELIXIRVERSION#` is the version of Elixir you're building the installer for.
 
 And that's it!  As an alternative to step 2, you could clone Elixir into `elixir-windows-setup` and build an installer for that repo.
 
@@ -31,5 +31,8 @@ Portions Copyright (C) 2000-2013 Martijn Laan. All rights reserved.
 #### [Inno Download Plugin](https://code.google.com/p/inno-download-plugin/)
 Copyright (c) 2013-2014 Mitrich Software
 
+#### [modpath.iss](http://legroom.net/software/modpath)
+Copyright (c) Jared Breland
+
 #### [Elixir](http://elixir-lang.org/)
 "Elixir" and the Elixir logo are copyright (c) 2012 Plataformatec.