update README

Author: chyndman

README.md

@@ -22,10 +22,8 @@ First, download the Unicode version of Inno Setup (`isetup-X.Y.Z-unicode.exe` fr
 To build the **web installer**, follow these steps:
 
 1. Download and install the [Inno Download Plugin](https://code.google.com/p/inno-download-plugin/).
-2. Download the [7-Zip Command Line Version](http://www.7-zip.org/download.html) and extract it somewhere.
-3. Edit the path in `elixir-windows-setup\7za_path.txt` to point to where you extracted 7za.exe.
-4. Open `elixir-windows-setup\ElixirWeb.iss` in the Inno Setup Compiler.
-5. Click "Compile" to build an installer in `elixir-windows-setup/Output`.
+2. Open `elixir-windows-setup\ElixirWeb.iss` in the Inno Setup Compiler.
+3. Click "Compile" to build an installer in `elixir-windows-setup/Output`.
 
 To build the **offline installer** follow these steps: